Overview Meningitis is an infection and swelling, called inflammation, of the fluid and membranes around the brain and spinal cord. These membranes are called meninges. The inflammation from meningitis most often triggers symptoms such as headache, fever and a stiff neck. Viral infections are the most common cause of meningitis in the United States. Bacteria, parasites and fungi also can cause it. Sometimes meningitis improves in a few weeks without treatment. But meningitis also can cause ... Meningitis is the inflammation of the meninges, the protective layers covering the brain and spinal cord. Symptoms include decreased consciousness, seizures, lethargy, confusion, high fever, rashes, rapid breathing, and neck stiffness. It can be caused by bacteria, viruses, fungi, parasites, or non-infectious factors like cancers, lupus, certain medications, head injuries, and brain surgery. Major risk factors include poor vaccination, advanced age, chronic health conditions, and living in ... Meningitis is frequently misunderstood, yet can cause serious harm and is sometimes fatal. Learn how to the spot the early signs and symptoms of an infection. Learn how to recognize the signs of meningitis , a serious infection that can affect the brain and spinal cord. Find out the differences between bacterial and viral meningitis , and when to seek medical help.
