Headaches can be very painful and can last for a long time.

If you have a headache your head hurts.

A sprained ankle can be so painful that you can't walk.

Someone with a sprained ankle may need to use crutches to walk.

If you have a sore throat, it may be painful to swallow.

A sore throat can be caused by viruses or bacteria.

A burn is an injury to the skin caused by fire or heat.

If you get too close to a fire, you will be burned.

An earache is a sharp, dull or burning pain in the ear.

Common causes of an earache include an infection, a change in air pressure or water in the ear.

(Earaches occur more often among small children than adults.)

(A headache can be caused by an injury to the head.)