Malformations of cortical development originate a group of pathologies that involve diverse manifestations that mark a significant degree of disability in those who suffer from. The Lissencephaly is one of alterations in neuronal migration characterized by a smooth surface or with few convolutions in the cerebral cortex. This disorder is often associated with difficult management Epilepsies. We report the case of a male patient from 18 months of age with a diagnosis of Lissencephaly, who presents generalized tonic seizures from 8 months of age. Was performed a simple skull CT and brain magnetic resonance to confirm the diagnosis and the pharmacological management was given to seizures