Symptoms:

Symptoms usually come on quickly, and may include:

• Fever and chills
• Mental status changes
• Nausea and vomiting
• Sensitivity to light (photophobia)
• Severe headache
• Stiff neck (meningismus)

Other symptoms that can occur with this disease:

• Agitation
• Bulging fontanelles
• Decreased consciousness
• Poor feeding or irritability in children
• Rapid breathing
• Unusual posture, with the head and neck arched backwards (opisthotonos)

Meningitis is an important cause of fever in children and newborns.

People cannot tell if they have bacterial or viral meningitis by how they feel, so they should seek prompt medical attention.

Signs and tests:

Physical examination will usually show:

• Fast heart rate
• Fever
• Mental status changes
• Stiff neck

For any patient who is suspected of having meningitis, it is important to perform a lumbar puncture ("spinal tap"), in which spinal fluid (known as cerebrospinal fluid, or CSF) is collected for testing.

Tests that may be done include:

• Blood culture
• Chest x-ray
• CSF examination for cell count, glucose, and protein
• CT scan of the head
• Gram stain, other special stains, and culture of CSF

Treatment:

Doctors prescribe antibiotics for bacterial meningitis. The type will vary depending on the bacteria causing the infection. Antibiotics are not effective in viral meningitis.

Other medications and intravenous fluids will be used to treat symptoms such as brain swelling, shock, and seizures. Some people may need to stay in the hospital, depending on the severity of the illness and the treatment needed.

Expectations (prognosis):

Early diagnosis and treatment of bacterial meningitis is essential to prevent permanent neurological damage. Viral meningitis is usually not serious, and symptoms should disappear within 2 weeks with no lasting complications.

Complications:

• Brain damage
• Buildup of fluid between the skull and brain (subdural effusion)
• Hearing loss
• Hydrocephalus
• Seizures

Calling your health care provider:

If you think that you or your child has symptoms of meningitis, get emergency medical help immediately. Early treatment is key to a good outcome.

Prevention:

• Haemophilus vaccine (HiB vaccine) in children will help prevent one type of meningitis.
• The pneumococcal conjugate vaccine is now a routine childhood immunization and is very effective at preventing pneumococcal meningitis.
• Household members and others in close contact with people who have meningococcal meningitis should receive preventive antibiotics to avoid becoming infected themselves.

The meningococcal vaccination is recommended for:

• Adolescents ages 11 - 12 and adolescents entering high school (about age 15) who have not already received the vaccination.
• All college freshmen who have not been vaccinated and are living in dorms.
• Children age 2 and older who do not have their spleen or who have other problems with their immune system.
• Those traveling to countries where diseases caused by meningococcus are very common (ask your doctor).

Some communities conduct vaccination campaigns after an outbreak of meningococcal meningitis.