my daughter has them when her temp goes up one degree higher. it is very scary and had no idea what happend with she first had one i was in shock. she had one around 13 months her first one and had mutiple ones that are longer and full blown Seziures. my adivce to you is make sure everyone is clam place them where they cant get hurt and put him on his side. if he has one for more them three mins call 911 or any signs of not being able to breath. likley my daughter has had hers when i didnt have the daycare kids. Its not something that i would want anyone to go through.