A headache is pain or discomfort in the head, scalp, or neck. Serious causes of headaches are rare. Most people with headaches can feel much better by making lifestyle changes, learning ways to relax,| medlineplus.gov
Reye syndrome is characterized by sudden (acute) brain damage and liver function problems. This condition does not have a known cause.| medlineplus.gov
Meningitis is an infection of the membranes covering the brain and spinal cord. This covering is called the meninges.| medlineplus.gov
Nausea is feeling an urge to vomit. It is often called "being sick to your stomach."| medlineplus.gov
Pneumonia is inflamed or swollen lung tissue due to infection with a germ.| medlineplus.gov
The flu can cause serious illness in people over 65, babies, and people with certain chronic illnesses. The best way to prevent the flu is to get a vaccine.| medlineplus.gov
Take steps to protect others while you are sick and when you start to feel better.| Respiratory Illnesses
Diabetes is a long-term (chronic) disease in which the body cannot regulate the amount of sugar in the blood.| medlineplus.gov