Some encephalitis can be treated, such as mild viral encephalitis, but each case needs to be analyzed on its own merits. The prognosis for encephalitis is related to the cause of the disease, its severity, and its susceptibility to treatment. Encephalitis is mainly categorized into viral encephalitis, bacterial encephalitis, fungal encephalitis, parasitic encephalitis, as well as autoimmune encephalitis and prion diseases. Each type of encephalitis can be categorized into many different types depending on the infecting agent, such as herpes simplex encephalitis, cytomegalovirus encephalitis, septic encephalitis, tuberculosis encephalitis, cryptococcal encephalitis, and so on. The severity of encephalitis and its recovery from treatment are related to the primary source of infection, the patient’s underlying medical condition, and the adequacy of treatment. For example, herpes simplex virus encephalitis can be cured in most patients if antiviral treatment is given within a few days of the onset of the disease, or if the disease is mild. Regardless of the type of encephalitis, it is recommended that patients consult a doctor in a timely manner and standardize their treatment under the guidance of a professional physician to avoid delays.