The following is a guide to meningitis, and should not be used for self-diagnosis. If you suspect someone has meningitis, contact a GP or call an ambulance without delay. Meningitis can be caused by several different viruses or bacteria. It is the infection of the thin membrane or lining which surrounds the brain, called the 'meninges'. The outcome of meningitis can vary from a mild infection which clears up after just a few days, to a serious, often fatal condition.
Bacterial meningitis is a severe and life-threatening illness.
Affected people become unwell very quickly, and may die within a matter of hours. If the person survives, it is possible that brain damage may have occurred. Get to a doctor immediately. There is a nationwide meningitis vaccination programme. The symptoms of meningitis often develop rapidly, sometimes in just a few hours.