A Case Report on Dyke-Davidoff-Masson Syndrome: A Rare Cause of Hemiparesis.

Infantile hemiparesis resulting from Dyke-Davidoff-Masson syndrome (DDMS) is an uncommon condition, especially in patients with no positive natal history. The age of presentation is dependent on when the neurologic insult occurred, and distinctive alterations may not appear until puberty. The left hemisphere and the male gender are more frequently involved. Common findings that can be seen are seizures, hemiparesis, mental retardation, and facial changes. Characteristic MRI findings are dilation of the lateral ventricles, hemiatrophy of the cerebrum, frontal sinus hyperpneumatization, and compensatory hypertrophy of the skull. Here, we report a 17-year-old female patient who reported physiotherapy treatment after the attack of epilepsy, with the complaint of inability to use the right hand for functional activities and gait deviations. Patient examination revealed typical chronic hemiparesis of the right side with mild cognitive affection. Brain investigation confirms the diagnosis of DDMS.