Partial seizures can progress into a generalized tonic clonic seizure.
It was anticipated that their seizures would mostly be generalized tonic clonic.
Clonic movements are common as a result of cerebral hypoxia, but recovery is fairly rapid.
They are mainly clonic, sometimes with apnoeic spells; tonic seizures have rarely been described.
The seizure activity itself is generally characterized as clonic (consisting of rhythmic jerking movements of the arms and/or legs), or tonic-clonic (commencing with a stiffening of the body followed by a clonic phase).