Cephalitis is a medical condition that refers to inflammation of the brain. It can be caused by viral infections, bacterial infections, or autoimmune conditions. There are various synonyms for cephalitis, including encephalitis, brain fever, meningoencephalitis, and cerebritis. Encephalitis is the most commonly used synonym for cephalitis. Meningoencephalitis refers to inflammation of both the brain and the meninges, while cerebritis specifically targets the cerebral tissue. Understanding these synonyms is important for accurate diagnosis and treatment of the condition. Early diagnosis and intervention are critical in preventing serious complications, such as permanent brain damage and death.