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 disorder Speech disorders, impairments, or impediments, are a type of communication disorder in which normal speech is disrupted. This can mean fluency disorders like stuttering and cluttering. Someone who is unable to speak due to a speech disorder is c ...

s. 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. Tachylalia can occur with

Parkinson's disease Parkinson's disease (PD), or simply Parkinson's, is a neurodegenerative disease primarily of the central nervous system, affecting both motor system, motor and non-motor systems. Symptoms typically develop gradually and non-motor issues become ...

.Tachylalia: clinical and acoustic study of 149 subjects
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References

Speech disorders {{Disease-stub