Tachylalia or tachylogia is extremely rapid speech. Tachylalia by itself is not considered a speech disorder. Tachylalia occurs in many clutterers and many people who have speech disorders.
Tachylalia is a generic term for speaking fast, and does not need to coincide with other speech problems.
Tachylalia may be exhibited as a single stream of rapid speech without prosody, and can be delivered quietly or mumbled. Tachylalia can be simulated by stimulating the brain electronically.Bérubé, Louise. Terminologie de neuropsychologie et de neurologie du comportement, Montréal, Les Éditions de la Chenelière Inc.,1991, 176 p., p.58.
Tachylalia can occur with Parkinson's disease.Tachylalia: clinical and acoustic study of 149 subjects
See also
Formal thought disorder
Logorrhea – disorder causing excessive wordiness Schizophasia
References