Coprolalia
Coprolalia ( 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 Greek κόπρος (kópros), meaning "dung, feces", and λαλιά (laliā́) "speech", from λαλεῖν (laleîn) "to talk".
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. It is not unique to tic disorders; it is also a rare symptom of other neurological disorders.
Coprolalia is one type of coprophenomenon. Other coprophenomena include the related symptoms of copropraxia, involuntary actions such as performing obscene or forbidden gestures, and coprographia, making obscene writings or drawings.
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