Atonic seizure

Atonic seizures (also called drop seizures, akinetic seizures or drop attacks), are a type of seizure that consist of a brief lapse in muscle tone that are caused by temporary alterations in brain function. The seizures are brief - usually less than fifteen seconds. They begin in childhood and may persist into adulthood. The seizure itself causes no damage, but the loss of muscle control can result in indirect damage from falling. Electroencephalography can be used to confirm diagnosis. It is rare and can be indicative of Lennox-Gastaut syndrome (see Henri Gastaut).