Encephalitis

Encephalitis is a swelling (inflammation) of the brain. It's usually caused by a virus. The normal blood flow to the brain changes, and this can cause symptoms. Encephalitis is not common, but it can be deadly if it's not treated right away.

Symptoms of encephalitis can include:

• Confusion.
• A fever.
• A headache (which can be very painful).
• A stiff neck and back.
• Light hurting your eyes.
• Nausea and vomiting.
• Lack of energy.
• Drowsiness.

More serious symptoms include:

• Seizures.
• Tremors.
• Personality changes.
• Memory loss.
• Hallucinations (seeing or hearing things that aren't there).

If you think that you or your child has encephalitis, call your doctor right away.

Your doctor will ask questions about your past health and your symptoms and may order tests to confirm the diagnosis. These may include:

• Spinal fluid analysis.

  By doing a lumbar puncture (also called a spinal tap), your doctor can check the spinal fluid for an increase in white blood cells and protein. The virus, bacteria, parasite, or fungus causing encephalitis also may be found in the spinal fluid.

• Imaging tests.

  An MRI or CT scan may show bleeding, swelling, or other changes in the brain caused by encephalitis.

• Electroencephalogram (EEG).

  This test can measure the electrical signals in the brain. It may show a change related to the illness.

• Blood tests.

  These tests can show what type of virus is causing encephalitis.

Encephalitis needs to be treated in a hospital. You may be treated with an antiviral medicine, such as acyclovir. Antiviral medicine may make symptoms less severe, especially if you get the medicine right away.

You'll also get supportive care to ease your symptoms and allow your body to heal on its own. You may take medicines to reduce pain and fever or to stop seizures. Some people may need a machine called a ventilator to help them breathe.

You may have some symptoms for several weeks or longer while your body slowly heals. Your doctor may recommend physical therapy. This can help you get stronger and active again.

• Take an over-the-counter pain medicine, such as acetaminophen (Tylenol), ibuprofen (Advil, Motrin), or naproxen (Aleve), for pain and discomfort. Be safe with medicines. Read and follow all instructions on the label.
• Do not take two or more pain medicines at the same time unless the doctor told you to. Many pain medicines have acetaminophen, which is Tylenol. Too much acetaminophen (Tylenol) can be harmful.
• Take your medicines exactly as prescribed. Call your doctor if you think you are having a problem with your medicine. You will get more details on the specific medicines your doctor prescribes.
• Drink plenty of fluids. If you have kidney, heart, or liver disease and have to limit fluids, talk with your doctor before you increase the amount of fluids you drink.
• Eat a healthy, balanced diet and get plenty of rest. This helps your body heal.
• Keep the lights dim if your eyes are sensitive to light.