Insefalites, commonly known as encephalitis, is an inflammation of the brain that can be caused by viral infections, autoimmune diseases, or other factors. Symptoms may include fever, headache, confusion, seizures, and in severe cases, can lead to neurological damage or death. Diagnosis typically involves medical imaging and lumbar puncture to analyze cerebrospinal fluid. Treatment often focuses on managing symptoms and addressing the underlying cause, with antiviral medications used if a viral infection is identified.