Anxiety & OCD Disorders: Causes, Types & Treatments

TAKEAWAYS:

• Anxiety disorders are biopsychosocial (biology + environment + cognition) and include generalized anxiety, panic attacks, phobias, and social anxiety, each with distinct triggers and coping mechanisms.
• Obsessive-compulsive disorder (OCD) involves intrusive thoughts (obsessions) and repetitive behaviors (compulsions), often misdiagnosed as "just being perfectionistic" but linked to serotonin dysregulation and threat detection overactivity in the brain.
• Trauma- and stress-related disorders (e.g., PTSD) emerge from prolonged exposure to danger, with symptoms like flashbacks and hypervigilance—common in Nepal after earthquakes or political violence.
• Cognitive-behavioral therapy (CBT) is the gold standard for anxiety/OCD, using techniques like exposure therapy and cognitive restructuring to rewire maladaptive thought patterns.
• Pharmacotherapy (SSRIs, benzodiazepines) targets neurotransmitters but carries risks of dependence or withdrawal, making therapy the preferred long-term solution.
• Cultural factors in Nepal (e.g., stigma around mental health, family expectations) shape how anxiety/OCD presents—e.g., agoraphobia may manifest as fear of leaving home due to societal pressures, not just physical spaces.

1. Defining Anxiety Disorders: Beyond "Just Being Worried"

Anxiety is a normal emotional response to stress, but when it becomes excessive, persistent, and disrupts daily life, it qualifies as a disorder. The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) classifies anxiety disorders into five main types:

Key Features of Anxiety Disorders

flowchart TD
    A["Anxiety Disorder"] --> B["Generalized Anxiety Disorder (GAD)"]
    A --> C["Panic Disorder"]
    A --> D["Specific Phobias"]
    A --> E["Social Anxiety Disorder"]
    A --> F["Obsessive-Compulsive Disorder (OCD)"]
    A --> G["Post-Traumatic Stress Disorder (PTSD)"]
    A --> H["Other Specified Anxiety Disorder"]

• GAD: Chronic, uncontrollable worry about everyday things (e.g., finances, health) for ≥6 months, with symptoms like restlessness, fatigue, and muscle tension.
• Panic Disorder: Recurrent sudden panic attacks (e.g., heart palpitations, shortness of breath) often mistaken for heart attacks.
• Phobias: Irrational, intense fear of specific objects/situations (e.g., heights, spiders, flying), leading to avoidance behaviors.
• Social Anxiety Disorder: Fear of social judgment or humiliation, causing avoidance of gatherings (e.g., parties, public speaking).
• OCD: Obsessions (intrusive thoughts) paired with compulsions (repetitive behaviors) to reduce anxiety (e.g., handwashing, checking locks).

Neurobiology of Anxiety

Anxiety disorders stem from dysregulation in the brain’s fear circuit, primarily involving:

1. Amygdala: Overactive in anxiety, triggering fight-or-flight responses even to harmless stimuli.
2. Prefrontal Cortex (PFC): Underactive in OCD, failing to suppress irrational fears.
3. GABA and Serotonin: Low GABA (a calming neurotransmitter) and serotonin imbalance contribute to heightened anxiety.

Worked Example: A Nepali Student’s GAD Rajesh, a medical student in Kathmandu, constantly worries about failing exams despite high grades. His hyperactive amygdala misinterprets study sessions as "threats to his future," while his PFC struggles to regulate these fears. His low serotonin makes him irritable, and he avoids social events (fear of judgment), worsening his isolation.

2. Obsessive-Compulsive and Related Disorders (OCRD)

OCD is often misunderstood as "just being neat" or "perfectionistic." However, it involves time-consuming rituals that interfere with daily life.

Obsessions vs. Compulsions

Common OCD Subtypes

flowchart TD
    A["OCD"] --> B["Contamination Obsessions"]
    A --> C["Checking Compulsions"]
    A --> D["Symmetry/Ordering"]
    A --> E["Hoarding"]
    A --> F["Intrusive Religious/Moral Obsessions"]

• Contamination: Fear of germs/illness (e.g., avoiding public toilets).
• Checking: Repeatedly verifying locks, stove, or phone (e.g., "Did I lock the door?").
• Symmetry/Ordering: Need for objects to be "just right" (e.g., arranging books in perfect rows).
• Hoarding: Difficulty discarding items due to fear of needing them later.

Real-World Tie: Pathao Driver’s OCD A Pathao driver in Pokhara develops checking compulsions after a near-miss accident. He repeatedly checks his rearview mirror, counts passengers, and avoids certain routes—costing him 2 hours/day and risking job loss. His amygdala overreacts to traffic as a "threat," while his PFC fails to inhibit the compulsions.

3. Trauma- and Stress-Related Disorders

These disorders arise from exposure to traumatic events, with symptoms lasting >1 month.

Post-Traumatic Stress Disorder (PTSD)

DSM-5 Criteria:

• Exposure to a threatening event (e.g., earthquake, assault, war).
• Intrusion symptoms: Flashbacks, nightmares, distress at reminders.
• Avoidance: Steering clear of trauma-related places/people.
• Negative alterations in cognition/mood: Guilt, detachment.
• Hyperarousal: Irritability, sleep problems, hypervigilance.

Worked Example: Nepal Earthquake Survivors After the 2015 earthquake, many survivors in Gorkha developed PTSD. A woman avoids entering her collapsed home, experiences flashbacks when hearing loud noises, and hypervigils (constantly checking for aftershocks). Her amygdala remains hyperactive, misinterpreting safe situations as threats.

Acute Stress Disorder (ASD)

• Shorter duration (3 days–1 month post-trauma).
• Dissociative symptoms: Feeling detached from reality.

Adjustment Disorders

• Stress-related symptoms (e.g., anxiety, depression) within 3 months of a stressor (e.g., job loss, divorce).
• Does not meet criteria for another disorder.

4. Diagnostic Criteria and Classification

The DSM-5 uses a multi-axial approach to diagnose anxiety/OCD disorders:

1. Clinical Syndrome: Symptoms (e.g., panic attacks, obsessions).
2. Personality Disorders: Co-occurring traits (e.g., avoidant personality).
3. Medical Conditions: Physical causes (e.g., thyroid disorders).
4. Psychosocial Stressors: Life events (e.g., divorce, financial crisis).
5. Global Assessment of Functioning (GAF): Severity (1–100 scale).

Comparison Table: Anxiety vs. OCD

5. Treatment Approaches

A. Cognitive-Behavioral Therapy (CBT)

• Exposure Therapy: Gradually facing fears (e.g., a phobic patient steps onto a ladder).
• Cognitive Restructuring: Challenging irrational thoughts (e.g., "I’ll fail" → "I’ve passed before").
• Behavioral Experiments: Testing fears (e.g., a social anxiety patient attends a small gathering).

B. Pharmacotherapy

Real-World Tie: Daraz Customer Service Anxiety A Daraz employee with social anxiety uses SSRIs (Sertraline) to manage panic during customer calls. While medication helps, CBT exposure therapy (role-playing calls) reduces reliance on drugs long-term.

C. Alternative Therapies

• Mindfulness-Based Stress Reduction (MBSR): Reduces anxiety by focusing on present moments.
• Exercise: Lowers cortisol (stress hormone).
• Support Groups: Reduces isolation (e.g., PTSD groups for earthquake survivors).

6. Cultural Considerations in Nepal

Anxiety/OCD in Nepal is often underreported due to:

• Stigma: Seen as "weakness" or "possession by spirits."
• Family Pressure: Expectations to suppress emotions (e.g., "Don’t cry").
• Religious Misinterpretation: OCD rituals may be mistaken for "spiritual cleansing."

Example: Agoraphobia in Kathmandu A young woman avoids Thamel’s crowded streets not just due to fear of crowds, but also because her family blames her for "disrespecting ancestors" if she leaves home. This cultural stigma delays treatment.

In the Real World

1. WhatsApp Group Anxiety

   • Idea Used: Social Anxiety Disorder
   • How: Many Nepali students avoid joining WhatsApp groups due to fear of judgment or offending others. A user might procrastinate on replies, leading to avoidance behavior—a hallmark of social anxiety.
   • Worked Example: A student in Tribhuvan University avoids posting in a group chat because she fears negative comments, even though she’s academically strong. Her hyperactive amygdala interprets silence as rejection.

2. Ncell Data Plan Stress

   • Idea Used: Generalized Anxiety Disorder (GAD)
   • How: Ncell users often worry excessively about running out of data, leading to sleep disturbances and decision paralysis (e.g., "Should I buy a 1GB or 5GB plan?"). This chronic worry fits GAD criteria.
   • Worked Example: A Pathao driver in Pokhara checks his Ncell balance 50 times/day, avoiding calls from unknown numbers (fear of scams). His PFC fails to regulate this behavior, causing work delays.

3. NEPSE Investor’s Panic

   • Idea Used: Panic Disorder
   • How: During market crashes, NEPSE investors experience sudden panic attacks—racing heart, sweating, and avoidance of trading. This mirrors panic disorder, where the body reacts to perceived threats (e.g., "My portfolio will collapse").
   • Worked Example: After the 2020 COVID crash, an investor in Kathmandu sold all stocks in a panic-driven decision, only to miss a 30% rebound. His amygdala triggered a false alarm, overriding logical thinking.

Exam Tip

1. Link Theory to Real Life

   • Always tie symptoms to Nepali contexts (e.g., "A student with GAD avoids exams due to fear of failure, like a Pathao driver avoiding busy routes").
   • Use worked examples from Nepal’s urban/rural life (e.g., earthquake PTSD, Ncell data anxiety).

2. Master DSM-5 Criteria

   • Examiners love structured answers with specific symptoms (e.g., "Panic disorder requires 4+ symptoms from DSM-5, such as palpitations, derealization, and fear of dying").
   • For OCD, emphasize the time-consuming rituals (e.g., "Washing hands for 2+ hours/day").

3. Compare and Contrast

   • Anxiety vs. OCD: Highlight obsessions vs. compulsions, neurotransmitters, and treatment differences.
   • PTSD vs. ASD: Stress duration (ASD: <1 month; PTSD: >1 month).

4. Cultural Sensitivity

   • Mention Nepali stigma around mental health and how it delays diagnosis (e.g., "Families may attribute OCD to 'evil eye' instead of seeking therapy").

5. Pharmacology Shortcuts

   • Memorize:
     • SSRIs (e.g., Fluoxetine) → First-line for OCD/anxiety.
     • Benzodiazepines (e.g., Xanax) → Short-term relief (risk of dependence).
     • Beta-blockers (e.g., Propranolol) → Physical symptoms only (e.g., stage fright).

6. Common Pitfalls to Avoid

   • ❌ Saying "anxiety is just laziness" → Always use DSM-5 criteria.
   • ❌ Confusing OCD with perfectionism → OCD involves compulsions to reduce distress.
   • ❌ Ignoring cultural factors → Nepali patients may hide symptoms due to stigma.

Final Visual: Anxiety/OCD Treatment Pathway

flowchart TD
    A["Symptoms Present?"] -->|"Yes"| B["Assess Severity"]
    B --> C["Pharmacotherapy (SSRIs/Benzos)"]
    B --> D["CBT/Exposure Therapy"]
    B --> E["Lifestyle Changes (Exercise, Mindfulness)"]
    B --> F["Cultural Sensitivity (Address Stigma)"]
    A -->|"No"| G["Monitoring"]