What are the possible causes of sudden onset of stuttering in a preschool child?

Possible causes of a sudden onset of stuttering in a preschool child include a reaction to a fast-paced lifestyle or family or social stress, explains WebMD. Preschool children may also be prone to stuttering if a family history of stuttering exists or if coping with other speech and language problems.

Children who experience issues with neurophysiology often begin stuttering because of interferences between muscles and the part of the brain that controls speech, according to WebMD. Rare incidents of stuttering caused by emotional or physical trauma have been reported, but research does not support trauma as a cause for the condition.