There are three phases of tonic-clonic seizures:
Beginning phase: A person may have early signs, such as mood and behavior changes, as well as an aura.
Ictal phase: This lasts from the first symptom until the end of the seizure and can include twitching, loss of consciousness, and convulsions.
Post-ictal phase: This is the recovery stage. A person may feel confused, nauseous, tired, and weak.