Changes of Clinical Features of a Infant who Ended in Specific Expressive language Disorder

A left-handed boy with developmental expressive language disorder was observed from the age of 4 months old to 9 years old. The chief complaint was motor delay and mild hypotonia at first. Transient mild right hemiplegia was observed from the age od six months to the age of three years. His clinical features gradually changed from those of motor delay to severe mental retardation with hyperactivity, and then to specific expressive language disorder. Neuro-psychological tests which were repeated from five to nine years of age showed almost normal ability of visual cogni-tion and memory, in contrast to the significantly low performances of auditory cognition and memory. EEG findings indicated a left hemispheric lesion. This case showed the need for a detailed observation of a left hemispheric dysfunction in the clinics for the children with speech delay.