It is a speech disorder in which the flow of speech is disrupted by involuntary repetitions and prolongations of sounds, syllables, words or phrases. It is a complex condition in which there are pauses that interrupt the flow and timing of the speech. It is common, especially in children.


  • Neurogenic or psychogenic
  • Family genetics
  • Environment and physical factors


  • Difficulty starting a word, phrase or sentence
  • Brief silence for certain syllables or words or pauses
  • Lip tremors
  • Excessive blinking

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