prolonged forced expiration against a closed glottis, resulting in deLaughter-Induced Syncope: Literature Review

Abstract

Syncope is a common and pervasive medical problem. The etiology of 30-40% of syncope remains unknown. Laughterinduced syncope is a rare subtype of vasovagal syncope that is not well understood. With this literature review we hope to elucidate the epidemiology, symptomatology, pathophysiology, diagnosis and therapeutic options of laughter-induced syncope. Greater awareness of laughter-induced syncope may better direct clinical investigations and improve patient care