What are the symptoms of myoclonic epilepsy?

Muscle spasms: Seizures usually have a stiff tonic phase followed by rhythmic jerking or clonic phase. Myoclonic spasms can be isolated and independent. Infants may have a series of painful spasms especially upon awakening. Adolescents may have morning spasms and even drop or throw their toothbrush. Lennox-gastaut patients may have massive spasms or drop attacks that are myoclonic. Difficult to treat.