Abstract
Proctalgia fugax is a distinct clinical syndrome of unknown etiology probably caused by spasm of either the internal anal sphincter or the anorectal ring or both. It is characterized by attacks of severe paroxysmal pain localized to the region of these muscles and may be associated with concomitant symptoms such as precordial pressure, pallor, profuse perspiration and transient syncope. A brief review of its evolution as a clinical entity and a theory for its pathogenesis have been presented. Nitroglycerine administered sublingually at the onset of pain will abort an attack in many instances. The disorder although relatively rare is probably encountered more frequently than supposed and should be included in the differential diagnosis of anorectal pain. Twelve new cases demonstrating various clinical aspects of proctalgia fugax are reported.
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