Panic attack

**Definition:** A discrete episode of intense fear or apprehension accompanied by the rapid and concurrent onset of a number of characteristic symptoms. These symptoms may include, but are not limited to, palpitations or increased heart rate, sweating, trembling, sensations of shortness of breath, feelings of choking, chest pain, nausea or abdominal distress, feelings of dizziness or lightheadedness, chills or hot flushes, tingling or lack of sensation in extremities (i.e., paresthesias), depersonalization or derealization, fear of losing control or going mad, and fear of imminent death. Panic attacks can appear out of the blue or can be triggered by particular situations.

**Exclusions:** - recurrent panic attacks - Panic disorder