The Collaborative International Dictionary
Counterirritate
Counterirritate \Coun"ter*ir"ri*tate\ (koun"t[~e]r-?r"r?-t?t), v. t. (Med.) To produce counter irritation in; to treat with one morbid process for the purpose of curing another.
Wiktionary
counterirritate
vb. (context medicine English) To produce an opposite irritation in; to treat with one morbid process for the purpose of curing another.