[Dyke Davidoff Masson Syndrome Presenting with Intellectual Disability with Behavioral Problems and Substance Use Disorder: A Case Report].

Dyke Davidoff Masson Syndrome (DDMS) is a rare condition with varied presentation. Characteristic features are cerebral hemiatrophy, enlargement of ipsilateral ventricle, enlargement of ipsilateral air sinuses and clinical finding of contralateral hemiparesis or hemiplegia and seizures. DDMS may have comorbid intellectual disability or speech disorder but presentation with psychiatric disorders is rare.