Overview

A fever is a high body temperature. It's one way your body fights illness. A temperature of up to 38.9°C can be helpful, because it helps the body respond to infection. Most healthy people can have a fever as high as 39.4°C to 40°C for short periods of time without problems. In most cases, a fever means that you have a minor illness.

How can you care for yourself at home?

• Drink plenty of fluids to prevent dehydration. Choose water and other clear liquids. If you have to limit fluids because of a health problem, talk with your doctor before you increase the amount of fluids you drink.
• Take an over-the-counter medicine, such as acetaminophen (Tylenol), ibuprofen (Advil, Motrin) or naproxen (Aleve), to relieve your symptoms. Read and follow all instructions on the label. No one younger than 18 should take aspirin. It has been linked to Reye syndrome, a serious illness.
• Rest, and limit activity.
• Wear lightweight clothing.
• Eat mild foods, such as soup.