Stuttering occurs in approximately 5% of children and 1% of adults worldwide. It is a disorder where the sufferer repeats sounds, syllables or words, disrupting the normal flow of speech, so that he/she can not be well understood. The disorder often starts when children begin to talk. Most children lose the stutter when their brains grow, but for some of them the problem remains. The current treatments include psychotherapy (to reduce anxiety), speech therapy, breathing exercises and electronic devices.
This disorder has always been a medical mystery that has been attributed to various causes, mainly psychological and emotional problems that create nervousness and stress to the patient. Now U.S. researchers claim that there is a biological cause behind this problem (at least for some people), and have discovered for the first time genetic mutations...
