West syndrome evolving into the Lennox-Gastaut syndrome.
Eight cases of WS developed electroencephalographic characteristics of the LGS in early childhood. The importance of EEG and clinical followups in patients with the WS for early detection of other associated forms of epilepsy, particularly the LGS, is therefore emphasized.
D004569:Electroencephalography; D004827:Epilepsy / Q000175:diagnosis*; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis*; D013036:Spasms, Infantile / Q000175:diagnosis*; D013577:Syndrome