List of medical terms

When you are very sick, you sometimes get a fever. When you have a fever you feel really bad, but the definition of a fever is that your body is much hotter than it normally is.

A headache is when your head hurts. You can get a headache because you are sick, stressed or many other reasons.

Your health is your general condition and well-being. If you are sick, you are in poor health. If you are feeling good, you are healthy. The plants in the picture are very healthy.

Hygiene means keeping yourself and the place you live and work clean so you stay healthy. Basic personal hygiene would include having a shower and brushing your teeth every day, and making sure that your clothes and bed linen is clean too.

Influenza is an infectious disease that birds and animals can get. The flu generally gives you a fever, sore throat, muscle pains, headache, a cough, and generally makes you feel very bad.