proctalgia

n.

"pain in the ass," 1811, from medical Latin proct-, Latinized form of Greek comb. form of proktos "anus" (see proctology) + -algia.

Online Etymology Dictionary, © 2010 Douglas Harper

proctalgia in Medicine

proctalgia

[prŏk-tăljə]
n.
  1. Pain at the anus or in the rectum.proctodynia rectalgia
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.