About Epileptic Encephalopathy with Continuous Spike-and-Wave during Sleep (EECSWS)1
EECSWS is a rare form of epilepsy that develops in children over time. Children with EECSWS typically have seizures while sleeping. There are many different seizure types that occur with EECSWS, the most common being focal motor seizure, which affects only one part of the body. EECSWS can begin in children between the ages of two and 12, with the average age of onset between four and five years. EECSWS is diagnosed with an electroencephalogram (EEG), which is a test that monitors the electrical activity of the brain.