Coprolalia (/ˌkɒprəˈleɪliə/KOP-rə-LAY-lee-ə) is involuntary swearing or the involuntary utterance of obscene words or socially inappropriate and derogatory remarks. The word comes from the Greekκόπρος (kópros), meaning "dung, feces", and λαλιά (laliā́) "speech", from λαλεῖν (laleîn) "to talk".[1]
Coprolalia is an occasional characteristic of tic disorders, in particular Tourette syndrome, although it is not required for a diagnosis of Tourette's and only about 10% of Tourette's patients exhibit coprolalia.[2] It is not unique to tic disorders; it may also presents itself as a neurological disorder.[3][4]
Coprolalia is one type of coprophenomenon. Other coprophenomena include the related symptoms of copropraxia, involuntary actions such as performing obscene or forbidden gestures,[6] and coprographia, making obscene writings or drawings.[7]
^Coprolalia. Dictionary.com, Accessed 30 October 2006.
^"Linguistics 210 Semantics"(PDF). Semantic features and Tourette's Syndrome. Retrieved 21 November 2006. While this source defines coprographia, it makes misrepresentations about copro phenomena in relation to Tourette's: they are not common, and not required for diagnosis.