Bipolar Disorder and Anxiety Disorders: Comorbidity and Assessment
Author: Ukrainian Psychological Hub · Published: October 9, 2026 · Editorial Policy
Bipolar disorder and anxiety disorders frequently occur in the same person. Clinicians use comorbidity to describe two conditions that independently meet their respective diagnostic criteria. A person with bipolar I or bipolar II disorder may also have generalized anxiety disorder, panic disorder, social anxiety disorder, or another anxiety disorder. At the same time, anxiety can arise during bipolar depression, mania, hypomania, or mixed presentations without amounting to a second diagnosis. Establishing which pattern is present requires a longitudinal clinical assessment: when symptoms began, how long they persist, whether they occur between mood episodes, and how they affect everyday functioning. NICE bipolar guidance and the NIMH clinical overview both emphasize assessment across a person's history and evaluation of coexisting conditions.
This distinction guides treatment. Anxiety merits attention even when it does not satisfy the criteria for a separate anxiety disorder; persistent anxiety with a distinct course may need its own focused intervention. The clinician must also consider whether the treatment chosen for one condition could destabilize the other. The CANMAT/ISBD guidelines recommend a carefully sequenced, individualized approach to bipolar disorder with co-occurring anxiety.
For additional clinical context, see Bipolar Disorder and Cognitive Function: Memory, Attention, and Daily Life.
What does anxiety comorbidity mean in bipolar disorder?
The term bipolar disorder identifies a family of mood disorders characterized by clinically significant episodes of altered mood and energy. Bipolar I disorder requires at least one manic episode. Bipolar II disorder involves hypomanic episodes and major depressive episodes, without a history of full mania. Hypomania and mania have distinct severity and impairment thresholds, and bipolar II is not simply a mild version of bipolar I. For background on episode patterns and diagnostic categories, see Bipolar Disorder: Symptoms, Types, Diagnosis, and Treatment. The NIMH overview describes these differences and why the history of episodes is essential.
Anxiety disorders involve patterns such as excessive, hard-to-control worry, recurrent unexpected panic attacks with subsequent concern or behavioral change, or persistent fear of scrutiny in social situations. Their diagnostic requirements depend on the particular disorder, including duration, distress, impairment, and relevant exclusions. Anxiety itself is a normal human response to perceived threat. During a mood episode it may also be an important symptom. In contrast, comorbidity refers to an anxiety disorder that meets its own criteria alongside bipolar disorder. NICE's guideline for generalized anxiety and panic describes anxiety-disorder assessment as a comprehensive evaluation of distress, functioning, context, and competing explanations.
Three clinical situations often look similar at first consultation: a distinct anxiety disorder that predates bipolar symptoms or continues through stable-mood periods; anxiety concentrated within episodes of bipolar depression or mood elevation; and both processes operating at once. The first may warrant two diagnoses, the second may be best understood as part of the mood presentation, and the third requires addressing two overlapping courses. These are working clinical formulations, not categories that a single questionnaire can establish. NICE CG185 calls for documentation of symptoms between episodes, medical and psychiatric comorbidities, and the person's changing clinical course.
How common are anxiety disorders among people with bipolar disorder?
A systematic review and meta-analysis by Pavlova and colleagues pooled 40 studies involving 14,914 people with bipolar disorder. It estimated that 45% had experienced at least one anxiety disorder during their lifetime, with a 95% confidence interval of 40%–51%. In the subset comparing bipolar disorder with population controls, the prevalence was approximately three times as high. The analysis found substantial heterogeneity, meaning that results varied across samples and methods; its pooled figure should not be treated as a forecast for a particular patient or as a current-year US prevalence estimate. Pavlova et al., 201500112-1).
A lifetime percentage answers whether someone has ever met criteria for an anxiety disorder; it does not describe how many people are currently symptomatic. The CANMAT/ISBD 2018 guidelines summarized clinical samples in which 24%–56% met criteria for one or more anxiety disorders, illustrating how population selection and measurement affect the reported proportion. Pavlova's meta-analysis also found no clear difference in lifetime anxiety-disorder prevalence between bipolar I and bipolar II in the studies that allowed that comparison. Pavlova et al., 2015.
The most responsible interpretation is that clinicians should routinely ask about anxiety in people being assessed or treated for bipolar disorder. Neither the pooled prevalence nor an individual's anxious behavior establishes a comorbid diagnosis. Structured interviews, clinical judgment, and attention to episode timing remain decisive. NICE CG185.
Which anxiety presentations commonly overlap with bipolar disorder?
Generalized worry and generalized anxiety disorder
Someone with bipolar disorder may spend extended periods worrying about money, relationships, health, work, or the possibility of another mood episode. Clinicians ask whether worry is excessive and difficult to control across domains, how long it has persisted, and whether related tension, restlessness, fatigue, sleep difficulties, concentration problems, or irritability cause meaningful distress or impairment. In a person with bipolar disorder, the challenge is determining whether this pattern also exists during periods without major mood symptoms. The definitive criteria for generalized anxiety disorder are separate from those for bipolar episodes. NICE CG113.
Anxiety about relapse can be understandable given a prior severe manic or depressive episode. Its clinical significance depends on its persistence, intensity, associated avoidance, and effect on life. A person who repeatedly checks their mood, avoids normal responsibilities, or loses sleep through worry deserves a careful assessment, while the clinician distinguishes adaptive prevention from a separate anxiety disorder. A formulation can address distress and behavior whether or not a second diagnosis is ultimately made. CANMAT/ISBD guidelines.
Panic attacks and panic disorder
Panic attacks can occur in several mental health conditions and during periods of intense stress. Sudden fear, a racing heart, breathlessness, dizziness, or fear of losing control may prompt someone to describe their experience as panic. Panic disorder requires a more particular history of recurrent unexpected attacks together with subsequent concern or maladaptive behavioral change, after accounting for other causes. One panic attack during bipolar depression or an agitated episode is insufficient to establish panic disorder. NICE CG113.
Assessment also considers cardiac, respiratory, endocrine, substance-related, and medication-related explanations when symptoms suggest them. Persistent avoidance following unexpected attacks may indicate a clinically important anxiety process even when mood is stable. The evaluator should ask what happens before, during, and after the attacks, and whether they correlate with distinct mood episodes. NICE CG113.
Social anxiety and avoidance
Fear of criticism, humiliation, embarrassment, or being observed may lead someone to avoid work meetings, school, public speaking, or social contact. In bipolar disorder, withdrawal also occurs during depressive episodes, while the consequences of previous episodes may heighten self-consciousness. A longitudinal interview asks whether social fear was present before the mood disorder emerged and whether it continues between episodes. The clinical goal is to identify the source and persistence of impairment and to choose appropriate anxiety-focused or mood-focused interventions. NICE CG185.
Trauma symptoms, obsessions, and overlapping diagnostic families
People can have bipolar disorder alongside post-traumatic stress disorder or obsessive-compulsive disorder. These conditions require their own assessments. Under contemporary diagnostic classification, PTSD and OCD belong to distinct diagnostic groupings rather than simply being interchangeable with generalized anxiety or panic disorder. Nevertheless, trauma-related arousal, intrusive thoughts, checking, and avoidance can complicate interpretation of distress and mood changes. This article keeps its focus on bipolar–anxiety comorbidity; the published English article OCD and Bipolar Disorder: What Is the Connection? addresses that separate clinical intersection. CANMAT/ISBD discusses anxiety, PTSD, and OCD as distinct comorbid clinical concerns.
How anxiety changes across bipolar mood episodes
Anxiety during bipolar depression
Bipolar depression may involve sadness, loss of interest, fatigue, impaired concentration, changed sleep or appetite, and thoughts of death. Anxiety can accompany this depressive state as worry, agitation, apprehension, or a sense of impending catastrophe. If anxiety is most prominent during depressive episodes and decreases substantially as the depression resolves, clinicians consider the possibility that it reflects the current mood episode rather than an independent anxiety disorder. The presence of anxious distress can still affect treatment planning and monitoring. NIMH; CANMAT/ISBD.
A person can also experience bipolar depression and a longstanding anxiety disorder simultaneously. A treatment plan then tracks depressive symptoms and anxiety separately rather than assuming that improvement in one guarantees improvement in the other. See the related English guide Bipolar Disorder Recovery and Remission: Stability, Recurrence, and Outlook. NICE CG185.
Anxiety, irritability, and agitation during mania or hypomania
Mania can involve elevated or irritable mood, increased energy or activity, rapid speech, racing thoughts, impulsivity, and decreased need for sleep. Some people experience agitation and anxiety rather than a consistently euphoric mood. Full mania is distinguished by its severity, duration, possible psychosis or hospitalization, and marked functional consequences; hypomania has a different diagnostic threshold. An agitated, sleepless presentation therefore requires careful assessment of energy, activity, judgment, and the entire episode, not a simple decision that the person is having an anxiety attack. NIMH; VA/DoD bipolar guideline.
When someone is sleeping very little without feeling tired, becoming unusually driven or disinhibited, taking significant risks, or developing severe behavioral changes, prompt assessment is important. Clinicians determine whether a manic or mixed presentation requires priority treatment. The need for immediate help is established by severity and safety, not by the word anxiety alone. NICE CG185.
Mixed features and anxious distress
Mixed features describe a mood episode that includes diagnostically relevant symptoms from the opposite mood pole. Agitation, irritability, insomnia, anxiety, and emotional intensity may be present, but anxiety by itself does not establish a mixed-features specifier. This distinction matters because a person with depression, activation, and prominent distress can require a different risk assessment from someone with uncomplicated generalized worry. Clinicians evaluate the actual manic and depressive features, course, medication exposure, and functional change. CANMAT/ISBD; NICE CG185.
Anxiety between mood episodes
Stable mood, sometimes described clinically as euthymia, does not guarantee that all anxiety symptoms have resolved. Worry, panic attacks, avoidance, trauma-related symptoms, and sleep difficulties may persist when the person has no current manic, hypomanic, or major depressive episode. This persistence is an important clue for separate assessment. Clinicians should also recognize residual mood symptoms, medication adverse effects, and the consequences of earlier episodes, which may require attention without adding an anxiety diagnosis. NICE CG185.
Why do bipolar disorder and anxiety disorders occur together?
Research identifies multiple plausible contributors to their overlap, but current clinical evidence does not support one universal mechanism. Some people appear vulnerable to both emotional dysregulation and anxiety across development; stressful events and interpersonal difficulties can influence symptom expression; and disrupted sleep may accompany and amplify both mood and anxious symptoms. The fact that two diagnoses co-occur does not show that one caused the other. Shared risk, reciprocal influences, illness consequences, and measurement overlap may all contribute. The CANMAT/ISBD guidelines review these interconnected clinical phenomena while noting limitations in comorbidity-specific intervention research.
Fear of recurrence is another understandable pathway. Someone whose prior mania led to hospitalization, conflict, or financial harm may become highly alert to changes in sleep or energy. Monitoring can help recognize early warning signs, while excessive checking, avoidance, or catastrophic interpretations may sustain anxiety. The relevant question is how these processes affect the individual's functioning and whether an independent anxiety disorder is present. A collaborative assessment can identify protective routines and burdensome patterns without reducing every fear to a psychiatric label. NICE CG185.
Alcohol, stimulants, cannabis, caffeine, some prescribed medications, and certain medical illnesses can add anxiety symptoms or complicate mood stability. Thyroid conditions and sleep disruption are particularly relevant clinical considerations in differential assessment. A clinician reviews physical health, medication and substance exposure, and symptom timing rather than assuming that all physiological arousal belongs to a psychiatric diagnosis. NIMH; NICE CG185.
What does research show about prognosis and functioning?
Anxiety comorbidity has been associated with greater symptom burden, impairment, and challenges in recovery, but these associations describe groups rather than predetermine individual outcomes. In a prospective 12-month study from the STEP-BD program, current anxiety-disorder comorbidity was associated with fewer well days, a reduced likelihood of timely recovery from depression, earlier relapse, lower quality of life, and diminished role functioning. This observational design identifies a clinically meaningful association without establishing anxiety as the sole cause of those outcomes. Otto et al., 2006.
The CANMAT/ISBD guidelines also describe links between comorbid anxiety and more mood symptoms, disturbed sleep, poorer psychosocial functioning, and suicidal symptoms. These patterns justify explicit assessment of anxiety, depression, functioning, medication tolerability, and safety. For suicide-related concerns, see the separately owned article Bipolar Disorder and Suicide Risk: Evidence, Warning Signs, and Care. Comorbidity calls for more attentive, coordinated treatment rather than fatalistic predictions about recovery.
How clinicians assess bipolar disorder and anxiety together
Step 1: Establish the history of mood episodes
Assessment begins with the person's full mood history: sustained periods of elevated or irritable mood, increased energy and activity, reduced need for sleep, behavioral change, and depressive episodes. Clinicians ask about episode duration, impairment, hospitalization, psychotic symptoms, treatment history, and family history. They look for evidence of mania or hypomania rather than trying to infer bipolar disorder from fluctuating daily feelings. The distinction between mania, hypomania, depression, and ordinary mood variability is central to diagnosis. NICE CG185; NIMH.
An individual's own recollection may be incomplete, particularly for periods when insight or judgment was altered. With consent, information from a family member or other trusted observer may help clarify whether behavior represented a departure from baseline. Clinicians should also review previous clinical notes and medication exposures where available. For the diagnostic process itself, the English Hub's How Is Bipolar Disorder Diagnosed? supplies a more detailed guide. NICE CG185.
Step 2: Make a timeline of anxiety
The evaluator asks when worry, panic, social fear, or avoidance began; whether they preceded the first mood episode; whether they recur with mania or depression; and whether they persist during periods of stable mood. They explore how often symptoms occur, their triggers, duration, physical sensations, associated thinking patterns, and functional consequences. Events such as childbirth, bereavement, trauma, a change in medication, or substantial sleep loss may help explain a shift in presentation. A timeline offers more diagnostic information than an isolated rating scale. NICE CG113; NICE CG185.
A practical approach may involve recording, over several weeks, sleep timing, mood, anxiety, energy, major stressors, medication changes, and daily activities. Such records can assist a clinician in identifying patterns, but a diary alone cannot establish either disorder. The record is most useful when it is proportionate and does not intensify constant reassurance seeking or checking. NICE CG185.
Step 3: Assess each anxiety syndrome on its own terms
If the timeline suggests a persistent anxiety disorder, clinicians explore its particular diagnostic criteria rather than assigning a vague anxiety label. For generalized anxiety, they ask about the breadth and control of worry; for panic disorder, they examine unexpected attacks and subsequent concerns or behavioral changes; for social anxiety, they assess fear related to social scrutiny and avoidance. They also examine whether symptoms produce clinically meaningful distress or interference in relationships, study, work, or daily routines. NICE CG113.
Step 4: Review differential diagnosis and overlapping symptoms
Restlessness, concentration difficulty, irritability, sleep disturbance, physical tension, and racing thoughts can appear in several conditions. Their context changes their meaning. Rapid thought during a sustained period of increased energy and reduced need for sleep may point toward hypomanic or manic activation; worry with fear, tension, and avoidance across otherwise stable periods may suggest an anxiety disorder. Depression may also explain concentration problems and distress. Clinicians assess ADHD, substance use, trauma, OCD, physical illnesses, and medication effects as appropriate without treating one symptom as proof of any of these diagnoses. NICE CG185; NIMH.
Step 5: Evaluate safety, functioning, and physical health
An assessment includes suicidal thinking, self-neglect, psychosis, severe sleep loss, impulsive behavior, impaired judgment, medication adherence, and whether urgent intervention is necessary. It also considers work, education, family life, finances, access to care, substance use, and supportive relationships. Routine physical health review and clinically indicated examinations or laboratory tests help identify relevant medical conditions and treatment risks. A clinician may coordinate with primary care or specialist services depending on the findings. NICE CG185; VA/DoD 2023.
Can screening questionnaires diagnose both conditions?
Questionnaires can help quantify current symptoms and track their change over time. The GAD-7, for example, was developed as a brief measure of generalized anxiety symptoms and probable cases in primary care. Its score describes recent symptom frequency, not the full clinical story, and it does not determine whether those symptoms arise from an independent disorder, a bipolar mood episode, a medical problem, or medication effects. It should therefore support rather than replace assessment. Spitzer et al., 2006.
Bipolar screening tools such as the Mood Disorder Questionnaire or Hypomania Checklist may raise questions about past activation, but self-report findings can be affected by recall, interpretation, comorbidity, and the population being screened. NICE explicitly advises against using questionnaires in primary care to identify bipolar disorder in adults; its recommended diagnostic pathway emphasizes clinical assessment. For a detailed instrument discussion, see Bipolar Disorder Screening Tests: MDQ, HCL-32, and Their Limitations. NICE CG185.
A high anxiety score is not proof of generalized anxiety disorder. A positive bipolar screening result is not proof of bipolar disorder. Neither can establish that two disorders are comorbid. Diagnosis depends on distinct criteria, course, impairment, exclusions, and expert clinical interpretation. NICE CG113; NICE CG185.
What treatments are considered when both disorders are present?
The treatment plan addresses active mood episodes, ongoing bipolar stabilization, specific anxiety symptoms, impairment, individual treatment history, safety risks, and patient preferences. NICE recommends treating coexisting anxiety disorders according to their relevant clinical guidance in addition to bipolar treatment, with attention to interactions and clinical judgment. The 2023 CANMAT/ISBD summary and evidence update should be read alongside the earlier guidelines for phase-specific bipolar treatments; recommendations for acute mania, bipolar depression, and relapse prevention are not interchangeable. NICE CG185.
Stabilizing mood and setting clinical priorities
When acute mania, severe depression, psychosis, or immediate safety risk is present, it generally becomes the first priority. Once the person is clinically stable, the team can reassess how much anxiety remains and whether it needs disorder-specific treatment. This sequencing is adapted to each individual rather than applied as a rigid waiting rule that disregards distress. The CANMAT/ISBD bipolar guideline describes the general priority of mood stabilization before introducing specific anxiety interventions and recommends tailoring management to severity and risk.
Mood-stabilizing treatment can involve lithium, selected antipsychotics, lamotrigine for appropriate phases, or other medicines chosen according to diagnosis, symptoms, medical history, prior response, and safety considerations. Lithium requires blood-level and kidney and thyroid monitoring; lamotrigine requires attention to potentially serious rash; antipsychotics require monitoring for metabolic and other adverse effects; and valproate carries major reproductive safety concerns. None of these agents should be started, stopped, or adjusted without the responsible prescriber. For comprehensive phase-specific choices and monitoring, see Bipolar Disorder Treatment: Medication, Therapy, and Long-Term Care. NICE CG185; VA/DoD 2023.
Cognitive behavioral therapy and other psychological interventions
Cognitive behavioral therapy (CBT) is a well-established anxiety treatment. It can address excessive worry, catastrophic interpretation of bodily sensations, avoidance, and gradual exposure to feared situations when clinically appropriate. For someone with bipolar disorder, the therapist also monitors mood, energy, sleep, and signs of relapse and coordinates care with the bipolar treatment team. The NICE anxiety guideline supports CBT for generalized anxiety and panic, while CANMAT/ISBD identifies CBT as a suitable first-line psychological approach to comorbid anxiety.
Bipolar-focused psychoeducation, structured relapse-prevention work, family interventions, and support for daily routines may further help reduce stress and improve functioning. These interventions have aims that overlap with anxiety care but do not automatically replace protocol-based therapy for an independently diagnosed anxiety disorder. Good treatment combines them according to the person's clinical needs rather than treating every psychological intervention as equally tested for every outcome. NICE CG185.
Why antidepressants need special attention
Selective serotonin reuptake inhibitors (SSRIs) and other antidepressants are commonly used for some anxiety disorders in the general population. A person with bipolar disorder requires a separate evaluation of potential mood destabilization, treatment-emergent hypomania or mania, prior activation, and current mood-stabilizing treatment. Consequently, a guideline recommendation for uncomplicated generalized anxiety disorder should not be applied automatically to someone with bipolar I or bipolar II disorder. NICE CG113; CANMAT/ISBD.
The clinical question is not whether all antidepressants always cause mania: risk varies with patient history, drug class, concurrent treatments, and the clinical context. Clinicians weigh potential benefits against risks and follow established bipolar-specific prescribing recommendations. People already taking antidepressants should discuss concerns and any emerging activation with their prescriber rather than stopping suddenly or changing doses on their own. CANMAT/ISBD; NIMH.
Quetiapine and other antipsychotics
Some controlled trials reviewed by CANMAT/ISBD found that quetiapine reduced anxiety symptoms in selected patients with bipolar disorder and comorbid generalized anxiety or panic, as well as in some bipolar-depression trial analyses. The trials do not establish quetiapine as a universal treatment for every anxiety disorder or justify combining indications without assessment. Quetiapine and other antipsychotics carry relevant risks, including sedation, weight gain, metabolic effects, and other adverse effects that require individualized monitoring. CANMAT/ISBD; NICE CG185.
Evidence is uneven across drugs: the same CANMAT/ISBD review reported negative trials for certain antipsychotics in samples with comorbid anxiety, reinforcing why clinicians should not infer that a medication effective for mania will necessarily treat generalized anxiety or panic disorder. The choice of treatment must reflect the target symptom, bipolar phase, benefits, tolerability, and medical risks. CANMAT/ISBD.
Benzodiazepines, dependence, and short-term decisions
Benzodiazepines may rapidly reduce anxiety or agitation in selected short-term clinical circumstances, but dependence, impaired alertness, falls, interactions with alcohol or other sedatives, and potential problems with prolonged use affect their risk–benefit profile. The CANMAT/ISBD guidance favors the lowest feasible dose for the shortest feasible period when a clinician considers these agents. They should not be assumed to be an appropriate long-term solution for persistent anxiety alongside bipolar disorder. CANMAT/ISBD; NICE CG113.
When evidence remains limited
There are fewer rigorous randomized trials specifically enrolling patients with both bipolar disorder and a clearly diagnosed anxiety disorder than trials for either disorder alone. Some commonly cited findings come from secondary analyses of bipolar-depression trials or small studies and should be interpreted accordingly. Psychological treatment for anxiety is supported by broader anxiety-disorder evidence, while exact adaptations and treatment sequencing for different bipolar subgroups remain individualized. CANMAT/ISBD.
Daily life, monitoring, and relapse prevention
A coordinated care plan can track two trajectories at once: mood stability and anxiety-related distress or avoidance. Concrete targets may include regular sleep–wake timing, following the prescribed medication plan, recognizing personal early warning signs of mood elevation or depression, attending treatment, gradually restoring avoided activities, and reducing substance-related triggers. The plan should identify which clinician is responsible for medication decisions, how the anxiety therapist and prescriber communicate, and what changes should prompt review. NICE CG185.
Family members and trusted supporters can help by recognizing patterns, offering practical support, and following a collaboratively agreed crisis plan where the person consents. An anxious person may need reassurance, while persistent behavioral change, decreased need for sleep, impaired judgment, or suicidal thoughts requires a different response. Relapse monitoring should protect the person's autonomy and should not become constant surveillance. The VA/DoD patient and family resources and NICE care-planning recommendations support collaborative planning.
Symptom improvement can be uneven. Depression may lift while avoidance remains; panic can improve while bipolar maintenance treatment continues; and a later mood episode may temporarily worsen anxiety. Periodic review helps clinicians avoid attributing every new symptom to the older diagnosis and permits adjustment of therapy or medication monitoring when genuinely needed. A longitudinal formulation is particularly useful during these transitions. NICE CG185.
Children, adolescents, older adults, and pregnancy
Anxiety and mood symptoms in children and adolescents require developmentally appropriate specialist assessment. Irritability, disturbed sleep, concentration problems, and emotional intensity alone are insufficient to establish pediatric bipolar disorder. The clinician considers developmental history, family information, impairment, episodic change, alternative diagnoses, and appropriate age-specific evidence. Adult medication and psychotherapy findings should not simply be transferred to young people. NICE CG185; NIMH.
For older adults, concurrent physical illnesses, medication interactions, cognition, fall risk, and changing sleep patterns complicate assessment and treatment selection. During pregnancy and postpartum periods, clinicians must separately assess maternal mental health, recurrence risks, current symptoms, and medication-specific reproductive or infant safety issues. Decisions about valproate, lithium, and other treatments demand specialist evidence and individualized consultation. These population-specific decisions extend beyond a general article on comorbidity. NICE CG185; CANMAT/ISBD.
When should someone seek urgent help?
Urgent assessment is appropriate when someone appears to be developing severe mania, psychosis, profound loss of sleep with increasing activation, unsafe impulsivity, marked inability to care for themselves, or suicidal thoughts with intent or an immediate danger. Severe agitation or panic-like distress also warrants urgent medical evaluation when accompanied by concerning physical symptoms or serious deterioration. Contact local emergency services or an emergency department when there is immediate danger. For a person with an established treatment team, follow the agreed crisis plan and contact urgent clinical services. NICE CG185; VA/DoD guideline.
During a crisis, the priority is safety and rapid professional assessment, not deciding whether a symptom belongs to anxiety or bipolar disorder. For non-urgent but persistent anxiety, contact the clinician managing bipolar care and describe how symptoms affect sleep, functioning, and daily life. Medication decisions should remain coordinated with qualified prescribers. NICE CG185.
Common misconceptions
Does having bipolar disorder mean every episode of anxiety is part of bipolar disorder?
No. Anxiety may arise during a mood episode, as an understandable reaction to life events, as a medication-related symptom, or as part of a separately diagnosable anxiety disorder. Persistence outside mood episodes and the full anxiety-specific clinical picture help clarify the formulation. NICE CG185.
Does an anxiety diagnosis mean the original bipolar diagnosis was wrong?
No. Both disorders can coexist. Nevertheless, a new pattern of symptoms can justify a review of the original diagnoses, including the evidence for past mania or hypomania and other possible explanations. Longitudinal assessment protects against both missed comorbidity and overdiagnosis. NIMH.
Is bipolar II disorder associated with much less anxiety than bipolar I?
The major pooled lifetime prevalence review did not establish a meaningful difference between bipolar I and bipolar II for any anxiety disorder across the directly compared samples. Individual experiences still vary considerably, and treatment decisions are based on a person's actual episodes and anxiety syndrome. Pavlova et al., 201500112-1).
Can treating bipolar disorder alone make anxiety disappear?
Anxiety linked mainly to a mood episode can lessen as that episode resolves. A persistent comorbid anxiety disorder may require targeted psychological or other treatment even when mood is stable. Follow-up assessment is therefore important. NICE CG185; CANMAT/ISBD.
Frequently asked questions
Can bipolar disorder and generalized anxiety disorder be diagnosed together?
Yes. Both diagnoses may be appropriate when each condition independently meets its clinical criteria, including the necessary duration, impairment, and exclusions. The clinician assesses mood episodes and chronic worry along their respective timelines rather than relying on one symptom checklist. NICE CG185; NICE CG113.
Can a person have panic attacks during mania?
Yes. Panic attacks or panic-like anxiety may occur in the context of several clinical presentations. Panic disorder requires its own pattern and criteria. When intense fear occurs with marked activation, decreased need for sleep, or impaired judgment, assessment also examines mania or mixed features. NIMH; NICE CG113.
What is the difference between anxious distress and a comorbid anxiety disorder?
Anxious distress describes an anxiety-related clinical feature associated with a mood episode. A comorbid anxiety disorder is a separately diagnosable condition with its own syndrome, duration, distress or impairment, and course. Both can appear in the same person, and a clinician may need repeated assessment as mood stabilizes. CANMAT/ISBD.
Is the GAD-7 reliable enough to confirm a second diagnosis?
The GAD-7 is useful for measuring recent anxiety symptoms and may prompt further evaluation; it cannot establish whether anxiety arises from a separate disorder or from bipolar symptoms. Clinical interviewing, history, and differential assessment are necessary. Spitzer et al., 2006; NICE CG113.
Can antidepressants for anxiety worsen bipolar symptoms?
In some individuals they can contribute to mood activation or destabilization, so clinicians must assess risks, prior treatment history, and the bipolar phase before prescribing. Do not stop or change a prescribed medication without discussing it with the treating clinician. CANMAT/ISBD.
Should anxiety be addressed even if bipolar mood symptoms are stable?
Yes. Ongoing worry, avoidance, panic, or sleep difficulties may continue to impair functioning and deserve their own clinical evaluation and care plan. Stable mood offers an opportunity to clarify the anxiety presentation rather than dismissing persistent distress. NICE CG185.
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References
Keramatian, K., Chithra, N. K., & Yatham, L. N. (2023). The CANMAT and ISBD guidelines for the treatment of bipolar disorder: Summary and a 2023 update of evidence. Focus, 21(4), 344–353. https://doi.org/10.1176/appi.focus.20230009
National Institute for Health and Care Excellence. (2011; updated). Generalised anxiety disorder and panic disorder in adults: Management (CG113). https://www.nice.org.uk/guidance/cg113/chapter/Recommendations
National Institute for Health and Care Excellence. (2014; last updated 2025). Bipolar disorder: Assessment and management (CG185). https://www.nice.org.uk/guidance/cg185/chapter/recommendations
National Institute of Mental Health. (n.d.). Bipolar disorder. U.S. National Institutes of Health. https://www.nimh.nih.gov/health/publications/bipolar-disorder
Otto, M. W., Simon, N. M., Wisniewski, S. R., et al.; STEP-BD Investigators. (2006). Prospective 12-month course of bipolar disorder in out-patients with and without comorbid anxiety disorders. British Journal of Psychiatry. https://doi.org/10.1192/bjp.bp.104.007773
Pavlova, B., Perlis, R. H., Alda, M., & Uher, R. (2015). Lifetime prevalence of anxiety disorders in people with bipolar disorder: A systematic review and meta-analysis. The Lancet Psychiatry, 2(8), 710–717. https://doi.org/10.1016/S2215-0366(15)00112-100112-1)
Spitzer, R. L., Kroenke, K., Williams, J. B. W., & Löwe, B. (2006). A brief measure for assessing generalized anxiety disorder: The GAD-7. Archives of Internal Medicine, 166(10), 1092–1097. https://doi.org/10.1001/archinte.166.10.1092
U.S. Department of Veterans Affairs & U.S. Department of Defense. (2023). VA/DoD clinical practice guideline for management of bipolar disorder. https://healthquality.va.gov/HEALTHQUALITY/guidelines/mh/bd/index.asp
Yatham, L. N., Kennedy, S. H., Parikh, S. V., et al. (2018). Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) 2018 guidelines for the management of patients with bipolar disorder. Bipolar Disorders, 20(2), 97–170. https://doi.org/10.1111/bdi.12609