Infantile Spasms (Salaam Seizures) By M Cristina Victorio, MD, Akron Children's Hospital Reviewed / Revised Mar 2023 View Patient Education Causes Symptoms and Signs Diagnosis Treatment Key Points Infantile spasms are seizures characterized by sudden flexion of the arms, forward flexion of the trunk, extension of the legs, and hypsarrhythmia on electroencephalography.