The exact cause is not known. It may happen when:
- A child's ability to speak does not match his verbal demands
- Certain genes
- A person has a stroke, head trauma, or other type of brain injury
- A person has emotional trauma (rare)
|Muscles and Nerves Involved in Speech|
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a (Stammering; Disfluent Speech)
American Speech-Language-Hearing Association http://www.asha.org
The Stuttering Foundation http://www.stutteringhelp.org
Canadian Stuttering Association http://www.stutter.ca
University of Alberta—Institute for Stuttering Treatment and Research http://www.istar.ualberta.ca
Cruz C, Amorim H, Beca G, Nunes R. Neurogenic stuttering: a review of the literature. Rev Neurol. 2018;66(2):59-64.
Stuttering. American Speech-Language-Hearing Association website. Available at: http://www.asha.org/public/speech/disorders/stuttering. Accessed April 9, 2020.
Stuttering. National Institute on Deafness and Other Communication Disorders website. Available at: http://www.nidcd.nih.gov/health/voice/pages/stutter.aspx. Updated March 6, 2017. Accessed April 9, 2020.