I found a photo on a Facebook called "4 stages of a seizure." Remember: Every person is different, so not every person will experience these. However, they are common.
Stage 1: Prodromal phase
It usually can occur from hours to even days before the seizure occurs. Signs consist of insomnia, unexpected and unusual grouchiness, severe headaches, and depression.
Stage 2: Aura
Typically the start of a seizure. Signs consist of nausea, migraines, sour tastes or smells, and feeling a sense of doom.
Stage 3: Ictus
The seizure itself. They range from grand mal to petit mal.
Common signs include jerking movements, loss of conscious, blank look on the person's face, falling to the floor, stiffening of muscles, convulsions, labored breathing, and/or an inability to respond to those around them.
Stage 4: Post-ictical
The phase that follows a seizure. It ranges from being very brief or lasting for several days. There might be severe tiredness, irritability, vomiting, fevers, migraines, confusion, balance problems, and/or changes in speech and behavior.