1) Pain affecting the sphincter 
Pain in the sphincter ani muscles. ... Origin: sphincter + G. Algos, pain ... (05 Mar 2000) ... 
Type: Term Pronunciation: sfingk′tĕr-al′jē-ă Definitions: 1. Pain in the sphincter ani muscles.
sphincteralgia Pain in a sphincter muscle, as of the anus. A sphincter is a ringlike band of muscle fibers that constricts a passage or closes a natural orifice.