Hypomelanosis of Ito with hemimegalencephaly.

Hypomelanosis of Ito is a neurocutaneous syndrome characterized by hypopigmented lesions occurring in streaks and whorls located on the trunk, head or extremities. The associated neurological manifestations include mental retardation, seizures, language disabilities and motor system dysfunction. Hemihypertrophy has also been described in this syndrome. We present a 3-month-old male infant with Hypomelanosis of Ito, hemi-hypertrophy and hemi-megalencephaly.