Anxiety Disorder Due to Another Medical Condition: Diagnosis and Differential Assessment
Author: Ukrainian Psychological Hub · Published: September 30, 2026 · Editorial Policy
Anxiety disorder due to another medical condition is a clinical diagnosis used when prominent anxiety or panic symptoms are judged to be a direct physiological consequence of an identified medical condition. The diagnosis is narrower than “anxiety while sick.” A person can feel frightened, worried, stressed, or panicky because of illness without meeting this diagnosis, and a medical condition can mimic anxiety symptoms without producing a psychiatric disorder.
In DSM-5-TR, the disorder remains within the Anxiety Disorders chapter. In ICD-11, the closest diagnostic construct is Secondary anxiety syndrome (6E63), which is classified among secondary mental or behavioral syndromes associated with disorders or diseases classified elsewhere rather than inside the Anxiety or fear-related disorders grouping. That classification difference matters when reading records, comparing studies, or translating diagnoses across systems.
This article focuses on diagnosis and differential assessment. It does not treat every physical symptom as anxiety and does not treat every medical illness associated with anxiety as proof that the medical illness directly caused the anxiety disorder.
Medical symptoms should not be assumed to be anxiety
Chest pressure or pain, marked shortness of breath, fainting, a new seizure, sudden one-sided weakness or numbness, new speech difficulty, severe confusion, or other acute neurological or cardiopulmonary symptoms can overlap with panic-like experiences but may signal medical emergencies. The American Heart Association advises urgent emergency evaluation for possible heart-attack symptoms, while the CDC emphasizes immediate emergency action for stroke signs. MedlinePlus similarly lists severe chest pain or pressure, severe breathing difficulty, fainting, certain seizures, sudden inability to speak or move, and sudden confusion among reasons for emergency care.
Online symptom matching cannot reliably distinguish panic from myocardial ischemia, arrhythmia, pulmonary disease, seizure, stroke, metabolic disturbance, or other medical causes. A history of anxiety does not make a new medical symptom automatically psychiatric.
What does “due to another medical condition” mean?
The phrase describes etiology. The clinician is not merely observing that two things coexist. The clinical judgment is that the medical condition itself has produced the anxiety syndrome through a physiological mechanism. The American Psychological Association Dictionary notes that DSM-5 and DSM-5-TR use “another medical condition” where DSM-IV used “general medical condition.”
Three relationships therefore need to be separated. A medical condition can directly generate anxiety symptoms; a person can develop an understandable psychological reaction to being ill; or a medical condition and an independent anxiety disorder can coexist. All three are clinically possible, and they lead to different diagnostic formulations.
Direct physiological causation
This is the relationship required for the DSM diagnosis. Evidence may come from the timing and course of symptoms, physical examination, laboratory findings, known pathophysiology, and the way the anxiety changes as the medical condition changes. DSM-5-TR frames diagnoses “due to another medical condition” around a direct pathophysiological consequence rather than simple temporal association.
Psychological reaction to illness
Receiving a frightening diagnosis, coping with pain, awaiting test results, losing function, or fearing recurrence can produce real anxiety without establishing a direct biological anxiety syndrome. Depending on severity, duration, context, and impairment, that experience may be normal stress, an adjustment-related presentation, another anxiety disorder, or no psychiatric disorder at all.
Comorbidity
A person with diabetes, asthma, heart disease, epilepsy, cancer, thyroid disease, or another medical condition can also have an independent generalized anxiety disorder, panic disorder, social anxiety disorder, specific phobia, or another mental disorder. Clinical guidelines emphasize that the presence of a medical condition does not automatically exclude a primary anxiety disorder.
DSM-5-TR diagnostic logic
The exact copyrighted DSM criteria should be consulted in the manual. In practical terms, the DSM-5-TR formulation requires a sequence of clinical judgments rather than a questionnaire score. DSM-5-TR recognizes Anxiety Disorder Due to Another Medical Condition as a specific anxiety diagnosis.
• Anxiety or panic is prominent enough to constitute the central psychiatric presentation.
• There is an identified medical condition.
• The history, examination, laboratory data, or other medical evidence supports a direct physiological relationship between that condition and the anxiety symptoms.
• Another mental disorder does not explain the presentation better.
• The symptoms are not occurring exclusively during delirium.
• The disturbance reaches a clinically significant level of distress, impairment, or another threshold for clinical attention.
None of these steps is equivalent to “the patient has a medical diagnosis and feels anxious.” The causal inference is the difficult part.
ICD-11: Secondary anxiety syndrome
ICD-11 organizes the same clinical territory differently. The World Health Organization’s ICD-11 CDDR lists 6E63 Secondary anxiety syndrome among secondary mental or behavioral syndromes associated with disorders or diseases classified elsewhere. A 2025 review comparing ICD-10 and ICD-11 confirms that the former ICD-10 concept of organic anxiety disorder (F06.4) maps to ICD-11 Secondary anxiety syndrome (6E63).
This means a clinician or researcher should not assume that every diagnostic system places medically caused anxiety inside the same chapter. For the broader architecture of ICD-11 anxiety diagnoses, see our ICD-11 Anxiety Classification: Anxiety or Fear-Related Disorders.
The current WHO ICD-11 browser should be used for live coding and classification details because ICD-11 is maintained and updated over time.
What symptoms can occur?
The presentation can resemble other anxiety disorders because anxiety is expressed through emotional, cognitive, behavioral, and autonomic systems. Symptoms may include apprehension, fear, a sense of impending danger, restlessness, difficulty concentrating, sleep disruption, tremulousness, sweating, palpitations, chest discomfort, breathlessness, dizziness, nausea, or panic attacks. The pattern depends heavily on the underlying condition and on whether a separate anxiety disorder is also present.
A panic attack is a symptom episode, not by itself a diagnosis of panic disorder. Our Anxiety vs Panic guide separates anxiety, panic attacks, and panic disorder. That distinction is especially important here because a medical condition can produce a panic-like episode without creating panic disorder.
Symptoms alone cannot identify the cause
Palpitations can occur in panic, but they can also occur with arrhythmias. Shortness of breath can occur in panic, but it can also occur with asthma, pulmonary disease, hypoxia, pulmonary embolism, infection, cardiac disease, anemia, and other conditions. Tremor and sweating can occur with anxiety, but also with endocrine or metabolic disturbances. Dizziness can arise from hyperventilation, vestibular disease, cardiovascular problems, neurological conditions, medication effects, or other causes.
The MSD Manual Professional Edition therefore recommends considering medical, substance, and medication causes when significant anxiety is assessed. It also notes that laboratory tests do not diagnose anxiety disorders themselves; testing is used when the clinical picture suggests a medical explanation.
Medical conditions that can cause or resemble anxiety
Lists of “medical causes of anxiety” are often misleading because they mix several relationships: direct pathophysiological anxiety syndromes, medical symptoms that feel like anxiety, illnesses statistically associated with anxiety disorders, and medications used to treat illness. Differential diagnosis requires separating those categories.
For a symptom-first guide to medical conditions that can resemble anxiety, see Anxiety Symptoms and Medical Differential Diagnosis. The present article keeps its narrower etiologic-diagnosis boundary.
Endocrine and metabolic conditions
Hyperthyroidism is a classic differential consideration because excess thyroid hormone can produce nervousness, tremor, heat intolerance, sweating, sleep disturbance, weight loss, and rapid or irregular heartbeat. MedlinePlus describes these features as part of hyperthyroidism. When anxiety begins in this context, thyroid status is clinically relevant; the psychiatric diagnosis still depends on whether the anxiety syndrome is best understood as a direct physiological consequence rather than simply a coincidental or psychological reaction.
Hypoglycemia, electrolyte disturbances, vitamin deficiencies, catecholamine-secreting tumors such as pheochromocytoma, and disorders of cortisol regulation can also enter the differential in the right clinical context. These conditions are not screened for indiscriminately in every anxious person; testing is guided by symptoms, history, examination, medications, risk factors, and clinician judgment.
Cardiovascular conditions
Heart rhythm disorders can produce pounding or rapid heartbeat, shortness of breath, chest discomfort, sweating, lightheadedness, and anxiety. The American Heart Association’s arrhythmia guidance explicitly notes symptom overlap. The safe conclusion from overlap is not that palpitations are cardiac or psychiatric; it is that the cause must be evaluated when the pattern, severity, onset, or associated symptoms warrant it.
Acute coronary syndromes can also include chest discomfort, shortness of breath, sweating, nausea, lightheadedness, and anxiety-like distress. New chest symptoms should therefore be assessed according to medical risk rather than interpreted from a symptom checklist.
Respiratory conditions
Asthma, chronic obstructive pulmonary disease, pneumonia, hypoxia, pulmonary embolism, and other respiratory conditions may produce breathlessness, chest tightness, tachycardia, dizziness, and fear. Some people subsequently develop anticipatory anxiety about breathlessness even after an acute episode has passed. That learned fear may become clinically important, but it is conceptually different from proving that the underlying respiratory disease directly caused the psychiatric syndrome.
Neurological conditions
Seizure disorders, traumatic brain injury, encephalitis, tumors, vestibular disorders, and other neurological conditions can enter the differential when symptoms are atypical for a primary anxiety disorder or when neurological signs are present. The Canadian anxiety guideline specifically identifies traumatic brain injury among medical differentials, while CAMH includes temporal-lobe epilepsy as an example of a condition that can mimic or exacerbate anxiety-like presentations.
Other medical contexts
Anemia, infection, inflammatory illness, severe pain, sleep disruption, and systemic disease can contribute to physiological arousal, fatigue, breathlessness, cognitive changes, or distress. The diagnostic task is to determine what is actually causing the anxiety presentation in the individual case rather than to treat a broad association as proof of direct causation.
How clinicians assess whether the medical condition is really the cause
There is no single blood test, scan, questionnaire, or symptom pattern that establishes Anxiety Disorder Due to Another Medical Condition. The diagnosis is constructed from clinical and medical evidence.
For the broader diagnostic process—including history, mental-status assessment, screening, functional impairment, comorbidity, and differential diagnosis—see How Is Anxiety Diagnosed? Assessment, History, and Differential Diagnosis.
1. Establish the anxiety phenotype
The clinician first clarifies what “anxiety” means in this case. Is the dominant problem persistent apprehension, panic attacks, fear of bodily sensations, situation-specific fear, avoidance, intrusive illness worry, autonomic arousal, or a mixture? The content, triggers, duration, frequency, and functional consequences matter.
The broader clinical threshold is addressed in our live guide Anxiety Disorder vs Normal Anxiety: Distress, Avoidance, and Impairment. Intensity alone does not determine whether a disorder is present.
2. Build the timeline
A careful timeline is often one of the strongest diagnostic tools. Clinicians ask when the anxiety began relative to the medical illness, whether it tracks disease activity, whether it appears during physiological episodes, whether it predates the illness, and whether it changes when the medical condition improves or worsens.
Temporal association supports a causal hypothesis but does not prove it. A person may receive a diagnosis on Monday and become anxious on Tuesday because the news is frightening; that is a temporal link without necessarily being a direct physiological one.
3. Review medications, substances, and withdrawal
The medical condition may not be the cause at all. A prescribed medication, drug, stimulant, caffeine exposure, intoxication, or withdrawal may be the more direct explanation. DSM-5-TR therefore keeps Substance- or Medication-Induced Anxiety Disorder separate from Anxiety Disorder Due to Another Medical Condition. This distinction is especially important when anxiety begins after a medication change. A condition and its treatment can each be plausible candidates, and the causal question must be resolved clinically.
4. Examine objective medical evidence
Relevant evidence may include physical examination findings, vital signs, electrocardiography, laboratory studies, imaging, neurological assessment, pulmonary evaluation, endocrine testing, or other investigations. Which tests are appropriate depends on the presentation. Routine testing of every possible medical cause in every anxious person is neither the logic of DSM-5-TR nor the logic of ordinary medical differential diagnosis.
5. Test competing explanations
The clinician considers whether the presentation fits a primary anxiety disorder better, whether a medication or substance is responsible, whether delirium is present, whether the anxiety is an adjustment response to illness, whether illness anxiety is the central problem, or whether physical symptoms are being misread as anxiety when no psychiatric syndrome is actually present.
6. Assess distress, impairment, and clinical significance
A biological relationship can exist without automatically creating a psychiatric diagnosis. The anxiety presentation must reach the relevant clinical threshold. The MSD Manual emphasizes clinically significant distress or dysfunction when anxiety disorders are assessed.
Differential diagnosis
Primary generalized anxiety disorder
Generalized anxiety disorder is characterized by persistent, difficult-to-control worry across domains together with associated symptoms and impairment. A medical condition may coexist with GAD. The question is whether the medical illness directly produces the anxiety syndrome or whether the person has an independent pattern of generalized worry.
Panic disorder
Panic disorder requires more than experiencing panic attacks. Recurrent unexpected attacks are followed by persistent concern about additional attacks or their consequences and/or maladaptive behavioral change, with other causes excluded. When attacks are generated by a medical condition, panic disorder is not simply assumed from the phenomenology of the attacks.
Substance- or medication-induced anxiety disorder
This diagnosis is considered when the direct driver is intoxication, withdrawal, or a medication rather than the medical illness itself. This distinction becomes especially important when anxiety starts after a medication change. A condition and its treatment can each be plausible candidates, and the causal question must be resolved clinically.
Normal anxiety and adjustment-related anxiety
Fear about surgery, cancer recurrence, a new cardiac diagnosis, loss of mobility, pain, or uncertain test results may be proportionate to the situation. When the reaction becomes clinically significant, an adjustment-related formulation may be relevant. Neither normal anxiety nor adjustment disorder requires a direct pathophysiological mechanism from the medical illness.
Illness anxiety disorder
Illness anxiety disorder centers on preoccupation with having or acquiring serious illness, typically with high health anxiety and repeated checking or avoidance. It is not a synonym for anxiety caused physiologically by a medical disease. A person can also have a genuine medical illness and still have disproportionate illness anxiety; the presence of disease does not decide the psychiatric diagnosis by itself.
Delirium and acute confusional states
Anxiety, agitation, fear, perceptual disturbance, and autonomic activation can appear during delirium. If anxiety occurs exclusively within delirium, it is conceptualized as part of the delirium rather than as this separate anxiety diagnosis. New anxiety accompanied by fluctuating attention, disorientation, marked confusion, or altered consciousness requires medical assessment.
OCD, PTSD, and other neighboring disorders
Obsessive-compulsive disorder and posttraumatic stress disorder can involve intense anxiety, but they occupy separate diagnostic families in DSM-5-TR and ICD-11. They should not be turned into subtypes of Anxiety Disorder Due to Another Medical Condition merely because anxiety is prominent.
Medical mimic without psychiatric disorder
Sometimes the most accurate answer is that a medical condition is producing palpitations, dyspnea, tremor, dizziness, weakness, or autonomic symptoms and the person does not have an anxiety disorder. Diagnostic restraint matters in both directions: clinicians should not miss medical disease, and they should not add a psychiatric diagnosis simply because the symptoms resemble anxiety.
Clues that increase the need for medical differential assessment
No single clue proves a medical cause. The following features commonly increase the value of a targeted medical assessment:
• new or abrupt onset of prominent anxiety or panic-like symptoms without a similar prior pattern;
• onset at an atypical age for the suspected primary anxiety disorder;
• symptoms tightly coupled to physiological episodes, exertion, meals, hormonal change, or other medical events;
• objective abnormalities such as irregular rhythm, persistent oxygen desaturation, marked thyroid abnormalities, neurological findings, fever, significant anemia, or metabolic disturbance;
• fainting, true loss of consciousness, focal neurological symptoms, or other features that are not well explained by ordinary panic phenomenology;
• a close relationship to starting, stopping, or changing a medication or substance;
• a course that tracks the activity of an established medical disease;
• a major change from the person’s previous anxiety pattern.
These are reasons to investigate, not diagnostic shortcuts.
What tests are used?
There is no universal “anxiety blood panel.” Testing is hypothesis-driven. Depending on the clinical picture, a clinician may consider thyroid testing, glucose measurement, a complete blood count, electrolytes, oxygenation, electrocardiography, cardiac monitoring, toxicology, pregnancy-related testing, neurological studies, pulmonary evaluation, imaging, or other investigations. The appropriate workup changes with age, history, symptoms, medications, examination, and medical risk.
A screening questionnaire such as the GAD-7 can quantify anxiety symptoms or help identify people who need further evaluation, but it cannot establish that anxiety is caused by a medical condition. A score is not a causal model and is not a formal diagnosis.
Can hyperthyroidism cause anxiety?
Yes, hyperthyroidism can produce anxiety-like and anxiety symptoms through excess thyroid hormone and increased physiological activation. MedlinePlus lists nervousness, tremor, heat intolerance, sweating, sleep problems, and rapid or irregular heartbeat among common manifestations. In a patient with new anxiety and compatible systemic signs, thyroid disease is therefore a meaningful differential consideration.
The diagnostic label Anxiety Disorder Due to Another Medical Condition is still not automatic. The clinician must determine whether the thyroid disorder is directly responsible for the clinically significant anxiety syndrome, whether the person has an independent anxiety disorder, whether medication is contributing, or whether several processes coexist.
Can a heart problem feel like anxiety or panic?
Yes. Arrhythmias and acute cardiac conditions can produce palpitations, chest discomfort, breathlessness, sweating, dizziness, and a sense of alarm. American Heart Association guidance on arrhythmia and heart-attack warning signs demonstrates why symptom overlap cannot be safely resolved by assuming anxiety.
The direction of causality can also run both ways. Fear can accelerate heart rate, while a rhythm disturbance can provoke fear. Clinical assessment may need to determine whether there is a cardiac disorder, an anxiety disorder, both, or an interaction between them.
Can asthma or breathing problems cause panic-like symptoms?
Yes. Dyspnea, chest tightness, tachycardia, and dizziness can be frightening and can resemble panic. Respiratory disease can also trigger genuine fear of suffocation or recurrence. The assessment must distinguish active respiratory pathology from panic-related hyperventilation and from a pattern in which both conditions are present.
A person with established panic disorder can still have asthma, and a person with asthma can still have panic disorder. Treating one diagnosis as proof against the other is a diagnostic error.
New-onset anxiety in older adults
New anxiety later in life deserves careful medical and medication review because older adults are more likely to have multimorbidity, polypharmacy, neurological disease, cardiovascular disease, endocrine disorders, and acute confusional states. At the same time, late-life anxiety can also represent a primary anxiety disorder or recurrence of an earlier disorder. Age changes the differential; it does not determine the diagnosis.
Children and adolescents
In younger people, anxiety symptoms can coexist with asthma, endocrine disease, epilepsy, medication effects, developmental conditions, and primary anxiety disorders. Assessment should use developmentally appropriate interviewing and collateral information when appropriate. Separation anxiety disorder, selective mutism, social anxiety disorder, specific phobia, panic disorder, and GAD retain their own diagnostic territories and should not be collapsed into a medically caused anxiety diagnosis.
Treatment: what is actually treated?
Treatment starts with the causal formulation. If a medical disorder is driving the anxiety syndrome, management of that medical condition is central. The details depend entirely on the disease involved and belong to the relevant medical specialty or primary-care plan.
Treat the underlying condition
When hyperthyroidism, arrhythmia, hypoglycemia, hypoxia, seizure activity, or another identified condition is responsible for the symptoms, correcting or stabilizing that condition may reduce the anxiety presentation. Improvement after treatment can strengthen the causal formulation, but lack of immediate improvement does not by itself disprove it because learned fear, residual symptoms, comorbidity, or chronic physiological effects may remain.
Treat clinically significant residual anxiety when needed
If anxiety remains impairing after the medical problem is treated or stabilized, the clinical team reassesses what remains. The person may have residual secondary anxiety, a co-occurring primary anxiety disorder, conditioned fear of bodily sensations, avoidance, insomnia, or another problem requiring its own treatment plan.
Psychotherapy
Psychological treatment can be useful for coping with illness, reducing avoidance, addressing catastrophic interpretations of bodily sensations, and treating a co-occurring primary anxiety disorder. However, evidence for CBT, exposure, interoceptive exposure, ACT, mindfulness, or digital interventions should be applied according to the actual disorder and mechanism being treated. Evidence from panic disorder or GAD should not automatically be presented as if it were trial evidence for Anxiety Disorder Due to Another Medical Condition.
Medication
There is no one medication regimen that can be recommended from the label alone. Pharmacological decisions depend on the underlying medical illness, the exact anxiety diagnosis, comorbidities, interactions, age, pregnancy status, organ function, adverse-effect risk, and current medications. A drug that is appropriate for a primary anxiety disorder can be inappropriate in a particular medical context.
For established primary GAD or panic disorder, guideline-based options can be considered by clinicians; NICE CG113 provides disorder-specific recommendations. Those recommendations should not be mechanically transferred to medically caused anxiety without an individualized assessment.
Prognosis and course
Course depends heavily on the underlying condition. Anxiety may resolve as the medical illness is corrected, fluctuate with disease activity, persist after the biological trigger improves, or reveal a co-occurring independent anxiety disorder. Chronic illness can also create continuing uncertainty, disability, pain, or bodily sensations that sustain understandable anxiety even when a direct physiological syndrome is no longer the best explanation.
For this reason, diagnostic formulation can change over time. Reassessment is appropriate when the medical condition changes, when medications change, when new symptoms appear, or when anxiety persists in a pattern no longer synchronized with the original illness.
Common diagnostic mistakes
Mistake 1: assuming every physical symptom is anxiety
Palpitations, dyspnea, dizziness, tremor, weakness, chest discomfort, and nausea have broad differentials. Anxiety may be one explanation, but symptom overlap is not a diagnosis.
Mistake 2: assuming every anxious patient with a medical illness has this disorder
A person can have normal fear, adjustment-related anxiety, illness anxiety, a primary anxiety disorder, medication-induced anxiety, or comorbidity. The “due to” diagnosis requires direct physiological causation.
Mistake 3: treating correlation as causation
Many medical illnesses are associated with higher rates of anxiety. Association can reflect biological effects, psychological burden, treatment effects, shared risk factors, disability, or ascertainment. Epidemiological association alone does not establish the diagnosis in an individual.
Mistake 4: diagnosing from a screening score
Screening tools measure symptoms or identify people who may need assessment. They do not determine etiology and do not establish DSM-5-TR or ICD-11 diagnosis by themselves.
Mistake 5: ignoring medication effects
When anxiety starts after a treatment change, the medication or substance pathway must be considered separately from the illness pathway. This is precisely why DSM separates Substance/Medication-Induced Anxiety Disorder from Anxiety Disorder Due to Another Medical Condition.
Mistake 6: using “anxiety attack” as a formal diagnosis
“Anxiety attack” is common informal language. Panic attack has a defined clinical meaning, while panic disorder is a distinct diagnosis. Neither phrase should substitute for a full differential assessment.
When to seek medical assessment
Medical assessment is especially appropriate when anxiety or panic-like symptoms are new, atypical, severe, accompanied by unexplained physical findings, temporally linked to a new illness or treatment, or substantially different from a person’s established anxiety pattern. Urgent or emergency assessment is appropriate for symptoms suggesting acute cardiac, respiratory, neurological, toxic, metabolic, or other serious medical conditions.
The central safety principle is simple: a clinician can diagnose anxiety while also investigating medical causes. Mental-health assessment and medical assessment are complementary when the presentation requires both.
Frequently asked questions
Is Anxiety Disorder Due to Another Medical Condition a real DSM-5-TR diagnosis?
Yes. DSM-5-TR includes it in the Anxiety Disorders chapter. The defining issue is a clinically significant anxiety presentation judged to be a direct physiological consequence of another medical condition, not merely anxiety occurring in someone who is medically ill.
What is the ICD-11 equivalent?
The closest ICD-11 construct is Secondary anxiety syndrome, code 6E63. ICD-11 places it among secondary mental or behavioral syndromes associated with disorders or diseases classified elsewhere rather than within the Anxiety or fear-related disorders group.
What medical conditions can cause anxiety symptoms?
Endocrine, metabolic, cardiovascular, respiratory, neurological, infectious, hematological, and other conditions can produce symptoms that resemble or contribute to anxiety. The clinically important question is not whether a condition appears on a list but whether medical evidence supports it as the cause in the individual case.
Can thyroid problems cause anxiety?
Yes. Hyperthyroidism can produce nervousness, tremor, sweating, insomnia, and rapid or irregular heartbeat, among other symptoms. Thyroid testing may be appropriate when the history and physical picture suggest it.
How do doctors tell panic from a heart problem?
They do not rely on anxiety symptoms alone. History, examination, vital signs, ECG or rhythm monitoring, laboratory testing, and other cardiac evaluation may be required depending on the presentation. New chest pressure, significant breathlessness, fainting, or other concerning features need medical assessment.
Does an abnormal medical test automatically prove the anxiety diagnosis?
No. An abnormal test can identify a medical condition, but the clinician must still determine whether that condition directly explains the anxiety syndrome. Coincidental findings and comorbidity are common in medicine.
Can a person have both a medical condition and panic disorder?
Yes. Medical illness does not rule out a primary anxiety disorder. Both can be present, and each may need its own treatment.
Can medication for a medical condition cause anxiety?
Yes. If a medication is the direct cause, the relevant formulation may be Substance/Medication-Induced Anxiety Disorder rather than Anxiety Disorder Due to Another Medical Condition. Medication changes should be reviewed with the treating clinician rather than stopped abruptly without guidance.
Can the GAD-7 diagnose this disorder?
No. The GAD-7 can screen for or quantify generalized anxiety symptoms, but it cannot determine whether anxiety is physiologically caused by a medical condition. Etiology requires clinical and medical assessment.
If treatment of the medical condition improves anxiety, does that prove causation?
It supports the causal hypothesis, especially when the timeline and physiology fit, but it is not absolute proof. Symptoms can improve for multiple reasons, and some anxiety may persist because of learned fear, residual physiology, or comorbidity.