Cluttered speech

Cluttering
Classification and external resources
Specialty	psychiatry
ICD-10	F98.6
ICD-9-CM	307.0
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Cluttering (also called tachyphemia or tachyphrasia) is a speech and communication disorder characterized by a rapid rate of speech, erratic rhythm, and poor syntax or grammar, making speech difficult to understand.

Cluttering is a speech and communication disorder that has also been described as a fluency disorder.

It is defined as:

"Cluttering is a fluency disorder characterized by a rate that is perceived to be abnormally rapid, irregular, or both for the speaker (although measured syllable rates may not exceed normal limits). These rate abnormalities further are manifest in one or more of the following symptoms: (a) an excessive number of disfluencies, the majority of which are not typical of people with stuttering; (b) the frequent placement of pauses and use of prosodic patterns that do not conform to syntactic and semantic constraints; and (c) inappropriate (usually excessive) degrees of coarticulation among sounds, especially in multisyllabic words".

Stuttering is often misapplied as a common term referring to any dysfluency. It is also often incorrectly applied to normal dysfluency rather than dysfluency from a disorder. Cluttered speech is exhibited by normal speakers, and is often referred to as stuttering. This is especially true when the speaker is nervous, where nervous speech more closely resembles cluttering than stuttering.

Cluttering is sometimes confused with stuttering. Both communication disorders break the normal flow of speech, but they are distinct. A stutterer has a coherent pattern of thoughts, but can't express those thoughts; in contrast, a clutterer has no problem putting thoughts into words, but those thoughts become disorganized during speaking. Cluttering affects not only speech, but also thought patterns, writing, typing, and conversation.

Stutterers are usually dysfluent on initial sounds, when beginning to speak, and become more fluent towards the ends of utterances. In contrast, clutterers are most clear at the start of utterances, but their speaking rate increases and intelligibility decreases towards the end of utterances.

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