Encephalitis is a condition where the brain becomes inflamed due to a virus or other types of infections. One kind of virus that can cause encephalitis is Herpes Simplex Type I. This virus is also known as "oral Herpes". Though Herpes Simplex type I most often causes mild symptoms like fever blisters, it can rarely travel to the brain and cause encephalitis.

Herpes simplex I is a very common virus that causes small blisters or "cold sores" on the lips, inside the nose, in the eye or on the eyelid. Once a person has the virus it stays dormant inside the nerves of the area until it is activated by some type of stress. Occasionally, it is possible for the virus to move to the brain. The virus can move from the nasal cavity up into the sinuses which are hollow air-filled cavities in the bones of the skull. This can result in encephalitis.

The symptoms of Herpes Simplex encephalitis can include:
* a sore throat,
* fever,
* headache,
* stiff neck,
* runny nose, and
* vomiting.

As the disease progresses, more serious symptoms such as personality changes, paralysis, hallucinations, convulsions, and coma can occur. If left untreated, herpes encephalitis can result in death. The antiviral drugs available to treat herpes infections are:
* Acyclovir, and
* Foscovir.

If you suspect that you have herpes encephalitis, it is very important that you contact your healthcare provider immediately. Proper diagnosed and prompt treatment are necessary.

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