Defects in TSC1 may also be a cause of focal cortical dysplasia.

All forms of focal cortical dysplasia lead to disorganization of the normal structure of the cerebral cortex.

Some specific disorders considered as alterations in neuronal migration are lissencephaly, schizencephaly, pachygyria, polymicrogyria and focal cortical dysplasia.

Focal cortical dysplasia associated with enlarged cells is known as FCDIIB.

Focal cortical dysplasia is a common cause of intractable epilepsy in children and is a frequent cause of epilepsy in adults.

The Cortical Foundation is a non-profit organization formed in 2011 to assist those affected by schizencephaly; and other cortical malformations like focal cortical dysplasia, microcephaly, polymicrogyria, tuberous sclerosis, hemimegalencephaly, lissencephaly, and heterotopia.