【Palilalia, Echolalia, Coprolalia, Aphasia】

Palilalia (from the Greek π?λιν (pálin) meaning "again" and λαλι? (laliá) meaning "speech" or "to talk")^[1] a complex tic, is a speech disorder characterized by the involuntary repetition of syllables, words, or phrases. It has features resembling other complex tics such as echolalia or coprolalia, but unlike other aphasias, palilalia is based upon contextually correct speech.[2]

Echolalia (also known as echologia or echophrasia^[1]) is the automatic repetition of vocalizations made by another person (by the same person is called palilalia). It is one of theechophenomena, closely related to echopraxia, the automatic repetition of movements made by another person; both are "subsets of imitative behavior" whereby sounds or actions are imitated "without explicit awareness".^[1] Echolalia may be an immediate reaction to a stimulus or may be delayed.^[1]

The word "echolalia" is derived from the Greek ?χ?, meaning "echo" or "to repeat",^[2] and λαλι? (laliá) meaning "speech" or "talk"^[3] (of onomatopoeic origin, from the verb λαλ?ω(laléo), meaning "to talk").

Coprolalia is involuntary swearing or the involuntary utterance of obscene words or socially inappropriate and derogatory remarks. Coprolalia comes from the Greek κ?προς (kopros) meaning "feces" and λαλι? (lalia) from lalein, "to talk".^[1] The term is often used as a clinomorphism, with "compulsive profanity" inaccurately referred to as being Tourette syndrome.

 

Related terms are copropraxia, performing obscene or forbidden gestures,^[2] and coprographia, making obscene writings or drawings.^[3]

• Coprolalia, involuntary utterance of obscene words
• Glossolalia, vocalizing of fluent speech-like but unintelligible utterances
• Echolalia, the repetition of vocalizations made by another person
• Palilalia, the repetition or echoing of one's own spoken words
• Colisa lalia, dwarf gourami, a fish