Can't take a deep breath. Severe chest pain. Heart beating very rapidly or has fainted. Followed a direct blow to the chest. If You think your child needs an office visit.
Fever is present.
If Sore muscles last for more than 7 days. Chest pains are a recurrent problem. Chest pains in children lasting for a few minutes are usually harmless muscle cramps. They need no treatment. Continue this until 24 hours have passed without pain.