Anxiety and Substance Use: Self-Medication, Withdrawal, and Comorbidity
Updated: Oct 8
Author: Ukrainian Psychological Hub · Published: October 1, 2026 · Editorial Policy
Anxiety and substance use can become linked in several different ways. A person may use alcohol, cannabis, nicotine, sedatives, stimulants, opioids, or another substance in an attempt to dampen anxiety. A substance may directly provoke anxiety during intoxication. Anxiety may emerge during withdrawal. An independent anxiety disorder and a substance use disorder can coexist. Shared biological, psychological, developmental, and social risk factors can also contribute to both. These pathways can overlap in the same person, which is why the phrase “anxiety and substance use” describes a clinical relationship rather than a single diagnosis.
The distinction matters because anxiety symptoms are not automatically an anxiety disorder, substance use is not automatically a substance use disorder, physical dependence is not the same thing as addiction, and a withdrawal syndrome is not the same thing as a primary anxiety disorder. The English Hub overview of Anxiety Disorders: Symptoms, Types, Diagnosis, and Treatment explains the anxiety-disorder family; this article focuses on the interaction between anxiety and substance use, especially self-medication, withdrawal, comorbidity, and treatment planning.
The evidence supports a strong association between substance use disorders and anxiety disorders at the population level. A systematic review and meta-analysis of 22 epidemiological surveys found that illicit drug use disorders and alcohol use disorders were both associated with substantially higher odds of anxiety disorders. Those figures establish comorbidity, not a one-way causal story. Lai et al. (2015) reported an odds ratio of 2.91 for illicit drug use disorders with any anxiety disorder and 2.11 for alcohol use disorders with any anxiety disorder.
What Does “Anxiety and Substance Use” Actually Mean?
Several clinical concepts can look similar from the outside. Someone may feel tense after several cups of coffee, panic after using a high-THC cannabis product, feel intensely anxious the morning after heavy drinking, become restless while withdrawing from nicotine, or have a long-standing anxiety disorder that predates any substance use. The symptoms may overlap, but the clinical explanations differ.
Anxiety symptom
Anxiety is a normal human response that can occur without a mental disorder. It can also appear as a symptom of an anxiety disorder, another psychiatric condition, intoxication, withdrawal, medication effects, sleep loss, pain, endocrine or cardiovascular illness, or many other states. The presence of worry, tension, palpitations, sweating, nausea, tremor, dizziness, or shortness of breath does not identify the cause. The dedicated Anxiety Symptoms page covers the symptom layer in detail.
Substance use
Substance use simply means that a person is using a psychoactive substance. Frequency, amount, context, consequences, impaired control, craving, tolerance, withdrawal, and continued use despite harm all matter when clinicians assess whether a substance use disorder is present. Occasional use and a formal substance use disorder are therefore different categories.
Physical dependence and withdrawal
Physical dependence means the body has adapted to repeated exposure so that reducing or stopping the substance can produce a withdrawal syndrome. Physical dependence can occur during medically supervised treatment and does not by itself prove addiction or a substance use disorder. This distinction is especially important with prescribed opioids and benzodiazepines. The CDC’s opioid use disorder diagnostic guidance notes that tolerance and withdrawal occurring solely during appropriate medical treatment do not by themselves count toward opioid use disorder diagnostic criteria.
Substance-induced anxiety disorder
A formal substance- or medication-induced anxiety disorder is narrower than “I felt anxious after using or stopping something.” The diagnosis requires a clinically significant anxiety or panic syndrome with evidence that the substance, medication, intoxication, or withdrawal is the physiological cause and that the presentation is not better explained by an independent disorder. That diagnostic territory belongs to Substance- or Medication-Induced Anxiety Disorder: Causes, Diagnosis, and Treatment.
Comorbidity
Comorbidity means two disorders are present in the same person. An anxiety disorder and a substance use disorder can therefore both be diagnosed when each independently meets its clinical threshold. SAMHSA uses the term co-occurring disorders for the coexistence of a mental health disorder and a substance use disorder, and emphasizes that both conditions may need coordinated care. The latest 2025 National Survey on Drug Use and Health estimated that 18.5 million U.S. adults had both any mental illness and a substance use disorder in the past year. That population statistic includes many mental illnesses and is not an anxiety-specific prevalence estimate.
How Common Is Anxiety–Substance Use Comorbidity?
Co-occurrence is common enough that clinicians are expected to ask about both domains. The strongest broad evidence comes from population studies showing that anxiety disorders and substance use disorders cluster together more often than chance alone would predict. The size of the association differs by anxiety disorder, substance, age, sex, clinical setting, and whether researchers measure use, hazardous use, dependence, or a diagnosed substance use disorder.
Alcohol is particularly well studied. The National Institute on Alcohol Abuse and Alcoholism summarizes evidence indicating that roughly 20% to 40% of people receiving treatment for anxiety disorders also have alcohol use disorder, while also stressing that alcohol-induced anxiety and independent anxiety disorders must be distinguished through a careful timeline. A treatment sample is not the same as the general population, so those percentages should not be read as universal prevalence.
The association also does not tell us which condition came first. Anxiety can precede problematic substance use, substance use can precede anxiety, both can arise from shared vulnerability, and reciprocal effects can strengthen both over time. A useful clinical model therefore asks about sequence and mechanism rather than assuming that one condition universally causes the other.
Why Do Anxiety and Substance Use Co-Occur?
A review of anxiety and substance use disorders describes three recurring explanatory models: shared vulnerability, self-medication, and substance-induced anxiety. Vorspan et al. (2015) emphasized that different pathways can apply to different people and substances. In practice, the mechanisms often combine rather than appearing as neat alternatives.
Self-medication
The self-medication pathway begins with a straightforward learning process: a substance changes an unpleasant internal state, and the person learns to repeat the behavior. Alcohol may briefly reduce social inhibition, nicotine may temporarily relieve withdrawal-linked tension, cannabis may feel calming at some doses or in some contexts, and sedatives may rapidly reduce arousal. Relief can make the behavior highly reinforcing even when longer-term consequences are harmful.
Population evidence supports self-medication as a real pathway, but not as a complete explanation of comorbidity. In a nationally representative U.S. study, Robinson et al. (2011) found that people with anxiety disorders who reported self-medicating with alcohol or drugs had higher odds of developing a new substance use disorder over three years. A broader review by Turner et al. (2018) found self-medication with alcohol or drugs in roughly one fifth to one quarter of people with mood or anxiety disorders across epidemiological studies.
Those findings do not mean that every person who drinks or uses drugs while anxious is self-medicating, and they do not prove that anxiety deterministically produces addiction. Self-medication is one pathway among several, and people may use substances for pleasure, social reasons, habit, pain, sleep, trauma-related distress, attention, withdrawal relief, or many other motives.
Substance-induced anxiety and withdrawal
The direction can also run from substance exposure to anxiety. Stimulants can increase sympathetic arousal and panic-like sensations; high-THC cannabis can produce acute anxiety or paranoia in some users; alcohol withdrawal can produce marked anxiety; nicotine withdrawal can cause restlessness and anxious feelings; and benzodiazepine withdrawal can produce severe anxiety along with potentially dangerous neurological complications. In these cases the substance may be generating or amplifying the anxious state rather than merely being used in response to it.
Shared vulnerability
Anxiety disorders and substance use disorders can also share risk factors. Genetics, temperament, stress exposure, childhood adversity, sleep disruption, peer environment, impulsivity, behavioral inhibition, reinforcement learning, and social context can influence one or both. The English Hub article What Causes Anxiety Disorders? Genetics, Learning, Stress, and Temperament explains why anxiety disorders themselves arise from multiple interacting influences rather than a single cause.
A bidirectional feedback loop
Once anxiety and substance use become linked, the relationship can become self-reinforcing. Anxiety increases the urge to use; short-term relief strengthens the behavior; tolerance, consequences, sleep disruption, intoxication, or withdrawal increase distress; the increased distress creates a stronger urge for relief. This is a negative-reinforcement loop: the behavior is repeated because it removes or reduces an aversive state.
The cycle is especially visible with alcohol. NIAAA describes how alcohol may appear to reduce anxiety in the short term while repeated heavy drinking and repeated withdrawal can intensify anxiety over time. NIAAA’s clinical resource on alcohol and anxiety therefore recommends using the symptom timeline to distinguish intoxication- or withdrawal-related anxiety from an independent anxiety disorder.
Self-Medication: Why Short-Term Relief Can Become a Long-Term Problem
Self-medication is psychologically understandable because rapid relief is powerful. If a substance makes a feared social event feel easier, quiets racing thoughts before sleep, blunts panic sensations, or interrupts an episode of distress, the brain learns an association between discomfort and the substance. The person may begin to believe the situation is manageable only with chemical assistance.
That learning can undermine natural corrective experiences. Someone with social anxiety who drinks before every conversation may never learn that they can tolerate anxiety and function without alcohol. Someone frightened by bodily sensations who uses a sedative at the first sign of arousal may attribute survival to the drug rather than discovering that the sensations can peak and pass. This does not mean that all medication use is a safety behavior; prescribed treatment can be appropriate. The issue is the function the behavior has in the person’s learning system.
Self-medication can also change the timing of symptoms. Relief during intoxication may be followed by rebound anxiety, sleep disruption, craving, withdrawal, shame, conflict, or impaired functioning. Those consequences can create new reasons to use. The clinically useful question is therefore not simply “Does this make me feel better right now?” but “What happens across hours, days, and repeated cycles of use?”
Alcohol and Anxiety
Alcohol is among the most common substances used to change anxiety. Its sedating and disinhibiting effects can temporarily reduce subjective tension, self-consciousness, or fear. That immediate effect helps explain why drinking can become attached to social situations, sleep, or stress. It does not make alcohol an evidence-based anxiety treatment.
After heavier drinking, people may experience next-day anxiety, autonomic arousal, poor sleep, dehydration, irritability, low mood, and heightened sensitivity to bodily sensations. Popular culture often calls this “hangxiety.” The term is informal. The underlying experience may reflect a mixture of alcohol’s acute effects, sleep disruption, stress physiology, psychological reaction to events while drinking, or early withdrawal in people with physiological dependence.
Repeated heavy drinking and withdrawal can create a more serious cycle. NIAAA describes alcohol addiction as involving changes in reward and stress systems that can sustain negative emotional states during withdrawal and recovery. In people with established alcohol dependence, anxiety during reduction or cessation may be part of a medical withdrawal syndrome rather than an isolated anxiety problem.
Alcohol withdrawal can become dangerous. The ASAM Clinical Practice Guideline on Alcohol Withdrawal Management emphasizes risk assessment because severe withdrawal can include seizures and delirium. MedlinePlus also lists severe confusion, hallucinations, fever, seizures, and irregular heart rhythms among serious manifestations. A person at risk for significant withdrawal should not use an online article as a detoxification plan.
Cannabis and Anxiety
Cannabis has a more complicated relationship with anxiety because effects vary by product, dose, cannabinoid composition, prior exposure, expectation, and individual vulnerability. Some people report relaxation; others experience acute fear, panic, racing thoughts, paranoia, tachycardia, dizziness, or depersonalization, particularly after high-THC exposure.
Long-term causal claims require caution. A critical review by Beletsky et al. (2024) concluded that cannabis use and anxiety are associated but that self-medication, shared risk, dose, product composition, and confounding complicate causal interpretation. A later systematic review and meta-analysis found no statistically clear increase in incident anxiety disorders overall, with a pooled risk ratio of 1.10 and a confidence interval crossing 1.0. That meta-analysis also identified substantial limitations in study quality.
Cannabis withdrawal can itself include anxiety. Connor et al. (2022) reviewed the syndrome and reported that symptoms generally begin within 24 to 48 hours after abrupt cessation or substantial reduction, often peak around days 2 to 6, and can persist longer in heavy users. Irritability, anxiety, disturbed sleep, depressed mood, and appetite change are common. The time course is a population pattern, not a clock that can diagnose an individual case.
Nicotine and Anxiety
Nicotine illustrates how withdrawal relief can be mistaken for treatment of anxiety. Regular nicotine exposure produces dependence in many users. When nicotine levels fall, withdrawal can produce irritability, restlessness, difficulty concentrating, sleep problems, and anxious feelings. Smoking or vaping can then rapidly relieve part of that withdrawal state, creating the impression that nicotine is treating baseline anxiety.
The CDC’s smoking-cessation guidance explains that anxiety, restlessness, and mood changes can occur temporarily after quitting and generally ease with time. It also notes that after the withdrawal period, people who stop smoking often report lower anxiety, depression, and stress. Temporary withdrawal symptoms therefore should not be interpreted as evidence that nicotine was medically necessary for emotional regulation.
Stimulants and Anxiety
Cocaine, methamphetamine, amphetamine-type stimulants, and other potent stimulants can produce alertness, increased heart rate and blood pressure, tremor, sweating, agitation, insomnia, hypervigilance, fear, and panic-like symptoms. At higher exposures they can also produce severe cardiovascular, neurological, psychiatric, and temperature-regulation complications.
The ASAM/AAAP Clinical Practice Guideline on the Management of Stimulant Use Disorder addresses stimulant intoxication, withdrawal, and potentially life-threatening complications. MedlinePlus guidance on cocaine intoxication similarly describes anxiety and agitation alongside chest pain, abnormal heart rhythms, seizures, and other serious effects. This overlap is why chest pain, fainting, severe shortness of breath, seizures, extreme agitation, or altered mental status after stimulant use should not be attributed to anxiety by symptom matching.
Opioids and Anxiety
Opioids can also become linked to anxiety through several routes. Some people use opioids in an attempt to numb emotional distress; others develop anxiety during withdrawal; and some experience anxiety around pain, access to medication, craving, or the consequences of opioid use. The presence of anxiety does not establish opioid use disorder, and opioid use disorder requires its own diagnostic assessment.
During opioid withdrawal, anxiety and agitation commonly occur along with insomnia, muscle aches, sweating, gastrointestinal symptoms, and other signs. MedlinePlus describes typical opioid withdrawal as intensely uncomfortable and notes that complications can occur. A separate safety issue appears after abstinence: tolerance falls, so returning to a previously tolerated dose can raise overdose risk. CDC overdose-prevention guidance emphasizes the danger of reduced tolerance after a period without opioids.
Benzodiazepines, Sedatives, and Anxiety
Benzodiazepines require especially careful language because they are legitimate prescription medications and can also produce physical dependence, misuse, and withdrawal. A person can become physically dependent while taking a benzodiazepine exactly as prescribed. Physical dependence alone does not mean addiction.
Withdrawal is the major safety boundary. The 2025 Joint Clinical Practice Guideline on Benzodiazepine Tapering states that patients who are likely to be physically dependent should not abruptly discontinue benzodiazepines and should generally be tapered under clinical supervision when discontinuation is appropriate. The FDA boxed-warning communication warns about abuse, misuse, addiction, physical dependence, and withdrawal reactions, including seizures after abrupt discontinuation or rapid dose reduction.
Benzodiazepines can also become risky when combined with other central nervous system depressants, especially opioids and alcohol. The FDA warning highlights these interactions. For people with a history of substance use disorder, prescribing decisions therefore require individualized risk–benefit assessment rather than a blanket rule that benzodiazepines are either always appropriate or always forbidden.
Can Withdrawal Cause Anxiety?
Yes. Anxiety can be a genuine withdrawal symptom. That does not automatically mean a new anxiety disorder has developed. The clinical task is to identify the substance, pattern and duration of use, timing of dose reduction or cessation, other withdrawal signs, medical risk, and whether anxiety existed independently before the substance exposure.
Different substances have different withdrawal profiles. Cannabis withdrawal commonly begins within one to two days and often peaks within the first week. Nicotine withdrawal commonly causes restlessness and anxious feelings early after quitting. Alcohol withdrawal may begin within hours after substantial reduction in a physically dependent person and can progress to serious complications. Benzodiazepine withdrawal varies according to medication, dose, duration, and taper pattern and can be medically dangerous. Fixed internet timelines are therefore a poor substitute for clinical assessment.
Persistent anxiety after the expected withdrawal period deserves reassessment. It may reflect a pre-existing anxiety disorder that had been masked by substance use, a new independent disorder, protracted substance-related symptoms, sleep disruption, depression, trauma-related symptoms, medication effects, a medical condition, or a mixture of factors. Persistence alone does not identify which explanation is correct.
Primary Anxiety Disorder, Substance-Induced Anxiety, Withdrawal, or Both?
Clinicians often reconstruct a timeline. The key questions include: Did anxiety begin before regular substance use? Did it appear only during intoxication or withdrawal? Does it reliably worsen after a specific exposure? Has there been a sustained period without the substance, and what happened to the anxiety then? Are the symptoms characteristic of a specific anxiety disorder? Is there another psychiatric or medical explanation? Is the substance pharmacologically capable of producing the syndrome at the dose and timing involved?
A diagnosis of a primary anxiety disorder becomes more plausible when a clear syndrome predates substance exposure, occurs during extended substance-free periods, has a course that is not well explained by intoxication or withdrawal, or shows a disorder-specific pattern such as persistent broad worry, recurrent unexpected panic attacks, social-evaluation fear, separation-focused fear, or a circumscribed phobia. That still requires a full clinical assessment rather than self-diagnosis.
A substance-induced diagnosis becomes more plausible when onset closely follows intoxication, medication exposure, or withdrawal; the substance is known to produce the relevant symptoms; and the course improves as the physiological effects resolve. The dedicated Substance- or Medication-Induced Anxiety Disorder article explains this diagnostic boundary in greater depth.
Both diagnoses may be appropriate when an independent anxiety disorder and a substance use disorder are each supported. Comorbidity is not a failure to choose between two explanations. Sometimes both are true, and the treatment plan has to address both.
Panic attacks are a symptom construct
A panic attack during intoxication or withdrawal does not by itself establish panic disorder. Panic disorder has its own diagnostic pattern involving recurrent unexpected panic attacks and subsequent persistent concern or maladaptive behavior change. The trigger, timing, and broader course matter. The informal phrase “anxiety attack” has no single standardized DSM-5-TR or ICD-11 definition.
Medical causes still matter
Substance use can complicate medical differential diagnosis. Palpitations may reflect anxiety, stimulant effects, dehydration, arrhythmia, thyroid disease, or another cause. Shortness of breath can occur with panic but can also indicate asthma, pulmonary disease, overdose, infection, or cardiovascular problems. Dizziness can arise from hyperventilation, blood-pressure changes, intoxication, anemia, vestibular conditions, dehydration, or many other causes. The English Hub page on Anxiety Symptoms and Medical Differential Diagnosis explains why symptom overlap never proves an anxiety cause.
What Counts as a Substance Use Disorder?
A substance use disorder is diagnosed from a pattern of impaired control, craving, continued use despite harm, risky use, social or occupational consequences, and related clinical features. It is not defined by a single episode of use, by moral disapproval, or by the presence of anxiety. Different substances have disorder-specific diagnostic details.
Tolerance and withdrawal can be clinically important without proving addiction. This is particularly clear in people receiving long-term prescribed medications. Conversely, a person can have a substance use disorder even when withdrawal is mild or absent. The future Substance Use cluster will own full disorder-specific diagnosis and treatment; this page keeps the focus on the anxiety–substance relationship.
When Anxiety-Like Symptoms After Substance Use Need Urgent Medical Care
Online symptom comparison has strict limits. Seek urgent medical assessment for severe or new chest pain, major breathing difficulty, fainting, seizure, severe confusion, hallucinations, a very high fever, a markedly irregular heartbeat, severe neurological symptoms, suspected overdose, extreme agitation, or rapidly worsening symptoms. The same applies when a person with likely alcohol or sedative dependence develops significant withdrawal symptoms.
The reason is not that anxiety cannot cause intense physical symptoms. It can. The reason is that potentially serious medical problems can produce the same sensations, and intoxication or withdrawal can itself create medical emergencies. Safety comes before assigning a psychological explanation.
For suspected opioid overdose, slowed or stopped breathing, inability to wake the person, or severe unresponsiveness requires emergency action. For stimulant exposure, severe chest symptoms, seizures, hyperthermia, or dangerous agitation require urgent care. For alcohol or benzodiazepine withdrawal, seizure, delirium, severe confusion, or hallucinations are major warning signs. Contact local emergency services when immediate danger is possible.
Assessment When Anxiety and Substance Use Occur Together
Good assessment treats the case as a timeline rather than a label. A clinician may ask about the age anxiety began, the age and pattern of substance use, periods of abstinence, intoxication effects, withdrawal symptoms, panic attacks, sleep, trauma history, medications, caffeine and nicotine, medical conditions, family history, and the functional consequences of both anxiety and substance use.
Screening questionnaires can help identify symptom severity or possible substance-related risk, but a score does not establish either an anxiety disorder or a substance use disorder. Formal diagnosis requires clinical assessment, context, duration, impairment, differential diagnosis, and the relationship between symptoms and substance exposure.
Laboratory testing can sometimes help identify recent substance exposure, medical complications, or other causes of symptoms, but a toxicology result cannot by itself determine why a person is anxious. A positive result does not prove that the substance caused the anxiety, and a negative result does not exclude every relevant exposure or an independent disorder.
Treatment When Anxiety and Substance Use Disorders Co-Occur
The strongest general principle is coordinated treatment. Treating only the substance use while ignoring severe anxiety can leave a major relapse driver untouched. Treating only anxiety while overlooking intoxication, withdrawal, craving, or substance-related risk can also fail. SAMHSA describes integrated care as a model in which mental health and substance use needs are addressed together rather than in disconnected systems.
Evidence for integrated behavioral treatment is promising. A 2023 meta-analysis of 11 studies found that behavioral interventions designed to address both anxiety and substance use produced small-to-moderate improvements over substance-use treatment alone in both domains. Wolitzky-Taylor et al. (2023) cautioned that the literature remains limited and heterogeneous.
A newer systematic review and meta-analysis by Nardi et al. (2024) similarly found small-to-moderate post-treatment benefits for anxiety and substance outcomes. Effects for anxiety and non-alcohol substance use persisted at follow-up in the pooled analyses, while the aggregated alcohol effect was not statistically significant at follow-up. The literature was weighted toward alcohol and cannabis, leaving important evidence gaps for other substances.
Psychological treatment
Cognitive behavioral approaches can target the mechanisms connecting anxiety and substance use: catastrophic interpretations, avoidance, safety behaviors, craving, cue reactivity, expectancies about substances, coping deficits, and the belief that anxiety is intolerable without chemical relief. Motivational interviewing and relapse-prevention strategies can be incorporated when substance use is a treatment target.
Exposure-based treatment can remain appropriate for anxiety disorders, but it needs thoughtful integration with substance-use care. The therapeutic goal is not to reproduce dangerous intoxication or withdrawal states. It is to help the person approach safe feared situations, sensations, or memories without relying on maladaptive avoidance or substance use as the only coping strategy.
The sequence of treatment should follow safety and clinical need rather than a rigid rule that one disorder must always be “fixed first.” Acute intoxication, dangerous withdrawal, overdose risk, psychosis, severe medical instability, or other urgent problems take priority. Outside those situations, simultaneous or closely coordinated treatment can be appropriate.
Medication
There is no single medication strategy for “anxiety plus substance use.” Medication decisions depend on the specific anxiety disorder, specific substance use disorder, medical history, current intoxication or withdrawal risk, other medications, pregnancy status, age, overdose risk, and treatment goals. Evidence from one anxiety disorder should not be automatically transferred to another.
Medications can be evidence-based for particular substance use disorders and for particular anxiety disorders, but comorbidity changes the risk–benefit discussion and treatment remains diagnosis-specific. For alcohol use disorder with co-occurring anxiety, NIAAA’s clinical guidance emphasizes treating both conditions and checking medication–alcohol interactions. The evidence base for pharmacological strategies specifically designed to treat anxiety and substance use disorders together is much thinner than the evidence for treating each condition within its established indications.
Benzodiazepines are a special case because rapid anxiolysis must be weighed against sedation, physical dependence, withdrawal, misuse risk, and dangerous interactions with opioids or alcohol. People already taking benzodiazepines regularly should not abruptly stop them on the basis of general internet advice; the joint benzodiazepine tapering guideline recommends individualized clinical planning.
Recovery: Why an Anxiety Spike Does Not Automatically Mean Treatment Is Failing
Anxiety can temporarily intensify during early reduction or cessation of a substance. Withdrawal, disrupted sleep, changes in routine, loss of a familiar coping strategy, increased awareness of emotion, and fear about relapse can all contribute. A temporary increase in symptoms does not necessarily mean the person “needs” the substance to stay psychologically stable.
At the same time, persistent or severe anxiety should not be dismissed as “just withdrawal.” An independent anxiety disorder may become more visible once intoxication and avoidance are reduced. The appropriate response is reassessment: what symptoms remain, how long have they persisted, what is their pattern, what is happening medically, and what function did the substance previously serve?
Recovery often involves replacing a single rapid coping mechanism with a broader set of skills and supports: evidence-based anxiety treatment, craving management, sleep stabilization, social support, exercise where medically appropriate, structured routines, problem solving, and care for co-occurring depression, trauma-related symptoms, pain, or neurodevelopmental conditions when present.
Practical Steps If You Are Using a Substance to Manage Anxiety
Start by observing the complete cycle rather than only the moment of relief. Record what happened before use, what you used, how much, what you expected it to do, how anxiety changed during the next few hours, how you slept, and what happened the next day. Patterns often become clearer when immediate benefit and delayed cost are viewed together.
Tell a clinician about all relevant substances, including alcohol, cannabis, nicotine, caffeine, prescription medication, over-the-counter medication, supplements, stimulants, sedatives, and nonmedical drug use. This is clinically useful information, not a confession. Accurate information improves differential diagnosis and reduces interaction risk.
If you may be physically dependent on alcohol or benzodiazepines, do not make an abrupt large reduction solely because anxiety is worsening. Withdrawal can be medically dangerous. Seek clinician-guided assessment. If opioids are involved, remember that tolerance can fall during abstinence, increasing overdose risk if use resumes.
If substance use has become the only way you can enter social situations, sleep, manage panic sensations, tolerate uncertainty, or recover from stress, that functional dependence on the strategy is worth addressing even before a formal diagnosis is known. Treatment can expand the number of ways you respond to anxiety so that one substance no longer carries the entire burden of regulation.
Frequently Asked Questions
Is self-medication the same as a substance use disorder?
No. Self-medication describes a motive or function: using a substance to change distress, anxiety, sleep, pain, or another internal state. A substance use disorder is a clinical diagnosis based on a broader pattern of impaired control, consequences, risky use, and related criteria. Self-medication can increase risk, but the concepts are not interchangeable.
Can alcohol cause anxiety?
Yes. Alcohol can be associated with anxiety during intoxication, the aftermath of drinking, and withdrawal, and it can contribute to a formal substance-induced anxiety disorder in some cases. An independent anxiety disorder can also coexist with alcohol use disorder. The symptom timeline is essential for distinguishing these possibilities.
Why am I anxious the day after drinking?
Next-day anxiety can reflect sleep disruption, autonomic rebound, dehydration, stress about events that occurred while drinking, changes in blood sugar or hydration, or early withdrawal in someone with physiological dependence. The informal term “hangxiety” describes the experience but is not a diagnosis. Severe symptoms, repeated morning withdrawal, seizures, hallucinations, or marked confusion require medical assessment.
Can cannabis withdrawal make anxiety worse?
Yes. Anxiety and irritability are recognized cannabis-withdrawal symptoms. The syndrome often begins within 24 to 48 hours after substantial reduction, peaks in the first several days, and can last longer in heavy users. Persistent anxiety beyond the expected withdrawal period may need assessment for an independent anxiety disorder or another cause.
Can quitting nicotine temporarily increase anxiety?
Yes. Nicotine withdrawal can cause temporary anxiety, restlessness, irritability, and concentration difficulty. Those symptoms usually diminish with time. Relief after smoking or vaping may partly reflect reversal of withdrawal rather than treatment of an underlying anxiety disorder.
How long does withdrawal anxiety last?
There is no universal duration. It depends on the substance, dose, duration and pattern of exposure, individual metabolism, co-occurring conditions, sleep, other medications, and whether the person is experiencing acute withdrawal, protracted symptoms, or an independent anxiety disorder. Alcohol and benzodiazepine withdrawal also have safety considerations that make generalized internet timelines inappropriate for detoxification decisions.
Should anxiety be treated before the substance use disorder?
There is no universal sequence. Acute medical danger, severe withdrawal, overdose risk, intoxication, or other instability takes priority. Otherwise, coordinated treatment of both conditions is often appropriate, and integrated behavioral approaches have growing evidence. The exact plan depends on the disorders involved and the person’s goals and risks.
Can I take benzodiazepines if I have a substance use disorder?
That decision requires individualized prescribing assessment. A history of substance use disorder can change the risk profile, especially when opioids or alcohol are involved, but it does not support a universal yes-or-no rule. If someone is already physically dependent on a benzodiazepine, abrupt discontinuation can be dangerous and should be avoided.
Does anxiety cause addiction?
Anxiety can contribute to risk through self-medication, negative reinforcement, avoidance, sleep disruption, and stress, but it does not deterministically cause addiction. Many people with anxiety disorders never develop substance use disorders, and many substance use disorders arise through pathways that are not driven by anxiety.
Related Articles
References
American Society of Addiction Medicine. (2020). The ASAM Clinical Practice Guideline on Alcohol Withdrawal Management. ASAM
American Society of Addiction Medicine and American Academy of Addiction Psychiatry. (2024). The ASAM/AAAP Clinical Practice Guideline on the Management of Stimulant Use Disorder. Journal of Addiction Medicine, 18(1S Suppl 1), 1–56. PubMed
American Society of Addiction Medicine and partner organizations. (2025). Joint Clinical Practice Guideline on Benzodiazepine Tapering. ASAM
Beletsky, A., Liu, C., Lochte, B., Samuel, N., & Grant, I. (2024). Cannabis and Anxiety: A Critical Review. Medical Cannabis and Cannabinoids, 7(1), 19–30. PubMed
Burke, C., Freeman, T. P., Sallis, H., Wootton, R. E., & Burnley, A. (2024). Associations of cannabis use, tobacco use, and incident anxiety, mood, and psychotic disorders: A systematic review and meta-analysis. Psychological Medicine, 54(15), 4287–4301. PubMed
Centers for Disease Control and Prevention. (2024). 7 Common Withdrawal Symptoms. CDC
Centers for Disease Control and Prevention. (2024). Opioid Use Disorder: Diagnosis. CDC
Connor, J. P., Stjepanović, D., Budney, A. J., Le Foll, B., & Hall, W. D. (2022). Clinical management of cannabis withdrawal. Addiction, 117(7), 2075–2095. PubMed
Food and Drug Administration. (2020). FDA requiring Boxed Warning updated to improve safe use of benzodiazepine drug class. FDA
Lai, H. M. X., Cleary, M., Sitharthan, T., & Hunt, G. E. (2015). Prevalence of comorbid substance use, anxiety and mood disorders in epidemiological surveys, 1990–2014: A systematic review and meta-analysis. Drug and Alcohol Dependence, 154, 1–13. PubMed
Nardi, W. R., Kelly, P., Roy, A., Becker, S., Brewer, J., & Sun, S. (2024). A systematic review and meta-analysis of psychosocial interventions for persons with comorbid anxiety and substance use disorders. Journal of Substance Use and Addiction Treatment, 165, 209442. PubMed
National Institute on Alcohol Abuse and Alcoholism. Mental Health Issues: Alcohol Use Disorder and Common Co-occurring Conditions. NIAAA
Robinson, J., Sareen, J., Cox, B. J., & Bolton, J. M. (2009). Self-medication of anxiety disorders with alcohol and drugs: Results from a nationally representative sample. Journal of Anxiety Disorders, 23(1), 38–45. PubMed
Robinson, J., Sareen, J., Cox, B. J., & Bolton, J. M. (2011). Role of self-medication in the development of comorbid anxiety and substance use disorders: A longitudinal investigation. Archives of General Psychiatry, 68(8), 800–807. PubMed
Substance Abuse and Mental Health Services Administration. Co-Occurring Disorders and Other Health Conditions. SAMHSA
Substance Abuse and Mental Health Services Administration. (2026). Key Substance Use and Mental Health Indicators in the United States: Results from the 2025 National Survey on Drug Use and Health. SAMHSA
Turner, S., Mota, N., Bolton, J., & Sareen, J. (2018). Self-medication with alcohol or drugs for mood and anxiety disorders: A narrative review of the epidemiological literature. Depression and Anxiety, 35(9), 851–860. PubMed
Vorspan, F., Mehtelli, W., Dupuy, G., Bloch, V., & Lépine, J.-P. (2015). Anxiety and substance use disorders: Co-occurrence and clinical issues. Current Psychiatry Reports, 17, 4. PubMed
Wolitzky-Taylor, K. (2023). Integrated behavioral treatments for comorbid anxiety and substance use disorders: A model for understanding integrated treatment approaches and meta-analysis to evaluate their efficacy. Drug and Alcohol Dependence, 253, 110990. PubMed