Panic Disorder

Panic Disorder is characterized not simply by having panic attacks — which can occur in many anxiety and mood conditions — but by the pattern of recurrent, unexpected attacks combined with ongoing worry about having another one, or a significant change in behavior to avoid triggering an attack. This anticipatory anxiety and behavioral avoidance often become more disabling than the attacks themselves, and without treatment can narrow a person's life considerably as they avoid more and more situations.

Panic Disorder involves recurrent unexpected panic attacks, with at least one attack followed by one month or more of persistent concern about additional attacks, worry about the implications of an attack (such as losing control, having a heart attack, or 'going crazy'), or a significant maladaptive change in behavior related to the attacks (such as avoiding exercise or unfamiliar places).

Panic Disorder arises from a combination of genetic vulnerability and dysregulation of the brain's fear-alarm system, which misfires in the absence of real danger. Many first episodes follow a period of significant stress, a major loss, a physical illness, or, in some cases, substance use. Once an initial panic attack occurs, the person often develops a conditioned fear of the bodily sensations themselves (a racing heart, breathlessness) which can trigger a self-reinforcing cycle where fear of the sensations produces more of the sensations.

• Family history of panic disorder or other anxiety disorders
• Female sex
• History of childhood physical or sexual abuse
• Major life stress, loss, or transition
• Smoking and high caffeine intake
• History of other anxiety disorders or depression
• Behaviorally inhibited or anxiety-sensitive temperament

Panic attacks are thought to arise from a hypersensitive fear network centered on the amygdala and its connections to the brainstem, including the locus coeruleus (the brain's primary noradrenaline source, which drives the surge of physical symptoms). One influential model, the 'false suffocation alarm' theory, suggests the brain's carbon-dioxide sensing system is oversensitive in panic disorder, triggering an air-hunger and suffocation alarm even when oxygen levels are normal — explaining why breathlessness and choking sensations are so prominent during attacks.

• Sudden surge of intense fear or discomfort peaking within minutes
• Palpitations, pounding heart, or accelerated heart rate
• Sweating, trembling, or shaking
• Shortness of breath or a smothering sensation
• Feelings of choking
• Chest pain or discomfort
• Nausea or abdominal distress
• Dizziness, light-headedness, or feeling faint
• Chills or hot flushes
• Numbness or tingling sensations
• Derealization (feeling of unreality) or depersonalization (feeling detached from oneself)
• Fear of losing control, 'going crazy,' or dying

• Recurrent, unexpected panic attacks (a sudden surge of intense fear peaking within minutes, with 4 or more physical/cognitive symptoms)
• At least one attack has been followed by 1+ month of persistent concern about additional attacks, worry about the consequences of an attack, or a significant behavior change to avoid attacks
• Not attributable to the physiological effects of a substance or another medical condition
• Not better explained by another mental disorder (e.g., attacks not only in response to feared social situations, as in social anxiety disorder)

Conditions a psychiatrist will consider and rule out before confirming this diagnosis:

Cardiac arrhythmia or coronary artery disease

A first panic attack, especially with chest pain, should be medically evaluated to exclude a cardiac cause before assuming an anxiety diagnosis.

Hyperthyroidism

Produces palpitations, tremor, and anxiety; thyroid function tests help distinguish this.

Pheochromocytoma

A rare adrenal tumor causing episodic surges of catecholamines that can closely mimic panic attacks.

Asthma or pulmonary embolism

Both cause breathlessness that must be distinguished from panic-related breathlessness.

Substance intoxication or withdrawal

Stimulants, caffeine excess, and alcohol/sedative withdrawal can all provoke panic-like episodes.

Generalized Anxiety Disorder

GAD involves continuous worry rather than discrete, sudden attacks.

• Detailed clinical psychiatric interview and attack history
• ECG to exclude cardiac arrhythmia, especially with chest pain
• Thyroid function tests
• Panic Disorder Severity Scale (PDSS) to grade severity
• Review of caffeine, stimulant, and substance use

Cognitive Behavioral Therapy — particularly with an interoceptive exposure component (deliberately and safely provoking feared bodily sensations to break the fear-of-fear cycle) — is highly effective and considered first-line. Medication, usually an SSRI or SNRI, is commonly used alongside therapy or when therapy access is limited, especially for moderate-to-severe presentations.

SSRIs (e.g., sertraline, paroxetine, escitalopram)

First-line long-term medication; started at a low dose since panic-prone patients can be sensitive to initial jitteriness.

SNRIs (e.g., venlafaxine)

An effective alternative or second option to SSRIs.

Benzodiazepines (e.g., alprazolam, clonazepam)

Fast-acting relief for acute attacks or during initial treatment, used short-term due to dependence risk.

Tricyclic antidepressants (e.g., imipramine)

An effective second-line option when SSRIs/SNRIs are not tolerated or ineffective.

Cognitive Behavioral Therapy (CBT)

First-line psychotherapy; combines cognitive restructuring of catastrophic misinterpretations with gradual exposure.

Interoceptive exposure

A core CBT technique where feared physical sensations (dizziness, breathlessness) are deliberately induced in a safe setting to reduce fear of the sensations themselves.

Panic-focused psychodynamic psychotherapy

Explores underlying emotional conflicts thought to contribute to panic vulnerability.

• Reduce or eliminate caffeine and stimulant intake
• Practice slow, diaphragmatic breathing regularly, not only during attacks
• Engage in regular aerobic exercise, which reduces overall anxiety sensitivity
• Avoid using alcohol to 'calm down,' which worsens the disorder over time
• Maintain a regular sleep schedule
• Gradually re-enter avoided situations rather than escalating avoidance

Panic Disorder responds very well to treatment, with most people achieving substantial reduction in attack frequency and severity within a few months. Left untreated, it frequently leads to agoraphobia and significant lifestyle restriction. Relapse can occur during stressful periods, but people who have learned CBT skills typically manage recurrences more effectively.

• Early treatment after a first panic attack to prevent the fear-of-fear cycle from becoming established
• Limiting stimulant and caffeine intake, particularly in anxiety-prone individuals
• Stress management and regular physical activity
• Avoiding avoidance — continuing to engage in daily activities after an isolated attack rather than withdrawing

Learn that panic attacks, while terrifying, are not medically dangerous — this understanding helps families respond calmly rather than reinforcing fear. Avoid encouraging avoidance (e.g., always driving instead of letting the person try public transport); instead, support gradual, agreed steps back into avoided situations. Accompanying someone to an initial exposure practice can help, provided the plan is to gradually reduce this support over time.

1. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, 5th Edition, Text Revision (DSM-5-TR).
2. World Health Organization. International Classification of Diseases, 11th Revision (ICD-11).
3. National Institute for Health and Care Excellence (NICE). Generalised anxiety disorder and panic disorder in adults: management.
4. National Institute of Mental Health (NIMH). Panic Disorder: When Fear Overwhelms.