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Cessation of stuttering after bilateral thalamic infarction

Stuttering is defined as an impairment of continuous utterance.1 The etiology of developmental stuttering remains obscure despite many studies of its neurogenic origin. We observed a patient who, after paramedian thalamic infarction, experienced cessation of stuttering and a personality regression to a childish manner without other neuropsychological dysfunctions. We describe the clinical, neuropsychological, and topographic correlates of this patient because this case may be of importance in understanding the neurogenic mechanism of stuttering.

A 66-year-old, right-handed man with atrial fibrillation suddenly lost consciousness on September 15, 1995. He was a serious, hard-grained, and taciturn person, and had had severe stuttering since childhood. On admission, he was in deep coma with mydriatic pupils without reaction to light. Oculocephalic reflex could not be elicited and Babinski’s sign was bilaterally positive. When he regained consciousness in a few days, his speech appeared fluent, and no stuttering was noted. At this time, he did not have paralysis of …