Agoraphobia

Agoraphobia - Fear of Open Spaces

• Marked fear or anxiety about ≥2 of the following situations:
  • Using public transportation
  • Being in open spaces (e.g., parking lots, bridges)
  • Being in enclosed spaces (e.g., shops, theaters)
  • Standing in line or being in a crowd
  • Being outside of the home alone
• Fears that escape might be difficult if panic-like symptoms develop.
• Symptoms must last for ≥6 months.
• Treatment: Cognitive Behavioral Therapy (CBT) and SSRIs are first-line.

⭐ While often co-occurring, a diagnosis of agoraphobia can be made independent of panic disorder.

Diagnosis - The DSM-5 Blueprint

• Core Criterion: Marked fear or anxiety about ≥2 of the following situations, fearing that escape might be difficult or help unavailable if panic-like symptoms occur.
  • 📌 Mnemonic: PLACES
  • Public transportation
  • Large, open spaces (e.g., parking lots, bridges)
  • Alone outside the home
  • Crowds or standing in line
  • Enclosed spaces (e.g., theaters, shops)
• Duration: Symptoms persist for ≥6 months.
• Impact: Causes clinically significant distress or functional impairment.
• Exclusion: Not better explained by another mental disorder.

⭐ High-Yield: Agoraphobia can be diagnosed irrespective of the presence of panic disorder. About 30-50% of individuals with agoraphobia have no history of panic attacks.

Differential Diagnosis - Ruling Out Mimics

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Treatment - The Escape Route

• First-Line Gold Standard: Combination of Cognitive Behavioral Therapy (CBT) and SSRIs.
  • 📌 Surely Safe Route Is Sertraline/Fluoxetine.
  • Start low, titrate slow to minimize initial anxiogenic effects.
• Cognitive Behavioral Therapy (CBT): The cornerstone of treatment.
  • Focuses on exposure therapy; gradual, repeated confrontation of feared situations (in vivo exposure is most effective).
  • Includes psychoeducation, breathing/relaxation techniques, and cognitive restructuring.
• Pharmacotherapy Algorithm:

⭐ High-Yield: The single most effective component of CBT for agoraphobia is in vivo exposure. Patients must physically enter and remain in feared situations until anxiety subsides.

• Second-Line/Adjuncts:
  • SNRIs (e.g., Venlafaxine) are effective alternatives.
  • ⚠️ Benzodiazepines (e.g., Alprazolam, Clonazepam) for severe, acute symptoms or short-term bridging. High risk of dependence; avoid long-term monotherapy.

High‑Yield Points - ⚡ Biggest Takeaways

• Agoraphobia is an intense fear of ≥2 situations (e.g., public transport, open spaces, crowds) where escape might be difficult.
• The core fear revolves around developing panic-like symptoms and being unable to receive help.
• Feared situations are actively avoided, require a companion, or are endured with intense anxiety.
• Symptoms must be persistent, lasting for ≥6 months.
• High comorbidity with panic disorder; specify if present.
• First-line treatment is SSRIs and CBT (exposure therapy).