Hypersensitivity to inhalation of carbon dioxide and panic attacks.

Abstract excerpt

Thirteen healthy subjects with infrequent panic attacks and without agoraphobia who did not meet DSM-III-R criteria for panic disorder, 43 patients with panic disorder, and 43 healthy control subjects who never experienced panic attacks underwent one vital capacity inhalation of 35% CO2. Healthy subjects with infrequent panic attacks reacted similarly to patients with panic disorder and more strongly than healthy...

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