Speech disorders

Stuttering, also known as stammering, is a speech disorder characterized externally by involuntary repetitions and prolongations of sounds, syllables, words, or phrases as well as involuntary silent pauses called blocks in which the person who stutters is unable to produce sounds. Almost 80 million people worldwide stutter, about 1% of the world's population, with a prevalence among males at least twice that of females. Persistent stuttering into adulthood often leads to outcomes detrimental to overall mental health, such as social isolation and suicidal thoughts.

type of communication disorder in which normal speech is disrupted

A lisp is a speech impairment in which a person misarticulates sibilants (, , , , , , , ). These misarticulations often result in unclear speech in languages with phonemic sibilants.

Cluttering 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.

neurodevelopmental condition

description of producing a sound

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.

medical condition

medical condition

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