Hypsarrhythmia is a specific type of abnormal brain wave pattern seen on an electroencephalogram (EEG) that is characteristic of infantile spasms, a form of epilepsy that typically occurs in infants and young children, usually between the ages of 3 months and 2 years. The EEG pattern is characterized by high-voltage, irregular waveforms, and it often consists of a mixture of slow waves and spiky, sharp waveforms.
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