Researchers are still studying the underlying causes of persistent stuttering. A combination of factors may be involved. Possible causes of persistent stuttering include:

  • Abnormalities in speech motor control. Some evidence indicates that abnormalities in speech motor control, such as timing, sensory and motor coordination, are implicated.
  • Genetics. Stuttering tends to run in families. It appears that stuttering can result from inherited (genetic) abnormalities in the language centers of the brain.
  • Medical conditions. Stuttering can sometimes result from a stroke, trauma or other brain injury.
  • Mental health problems. In rare, isolated cases, emotional trauma can lead to stuttering.
Aug. 20, 2014