Seizures involving stiffening of all extremities. These can often lead to falls. At times, it is hard to tell visually whether the child fell due to loss of tone (atonic seizure) or stiffening (tonic seizure). Because of this difficulty separating atonic and tonic seizures, clinicians often lump atonic and tonic seizures together and call them “drop attacks.”
Previously called grand mal seizures, these begin with stiffening of all extremities (tonic phase) followed by rhythmic jerking of all extremities (clonic phase). The tonic phase usually lasts about 30 to 60 seconds, and the clonic phase one to two minutes. The overwhelming majority of tonic-clonic seizures last less than three minutes.
A disorder in which benign tumors develop in various organs of the body, including the brain, eyes, skin and kidneys.
An abnormal mass of tissue in the body. Tumors can be benign (noncancerous) or malignant (cancerous).