Pain is an uncomfortable feeling that tells you something may be wrong. It can be steady, throbbing, stabbing, aching, pinching, or described in many other ways. Sometimes, it’s just a nuisance, like a mild headache. Other times it can be debilitating.

A high body temperature is a fever that is higher than normal. It's usually a sign that something isn't quite right in the body. Body temperature can rise as a result of exercise, hot weather, and routine childhood vaccines. Most healthcare providers consider a fever to be 100.4°F (38°C) or higher. High fevers may bring on seizures or confusion in children. It's not how high the temperature is, but how fast the temperature goes up that causes a seizure.