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Encephalitis is inflammation of the brain tissue. It's most often caused by viral infections. In some cases, bacterial infections can also cause encephalitis.
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 1 (HSV-1).Although Herpes simplex type 1 most often causes mild symptoms like cold sores and fever blisters, it can occasionally travel to the brain and cause encephalitis.ne kind of virus that can cause encephalitis is Herpes simplex type 1 (HSV-1). Although Herpes simplex type 1 most often causes mild symptoms like cold sores and fever blisters, it can occasionally travel to the brain and cause encephalitis.