What happens: Your child won't be able to respond to you. He may be shaking and his eyes may be rolled back.
What to do: Lay him on his side and clear away any objects that could harm him. Let the seizure run its course; it will probably stop. If it continues for more than 10 minutes, call for an ambulance.
What not to do: Don't perform CPR on your child during the active part of the seizure. Don't restrain him in an effort to stop the shaking, or put any objects into his mouth.