There are four common clinical types of meningitis, including viral meningitis, septic meningitis, tuberculous meningitis, and cryptococcal meningitis. These different types of meningitis have clinical manifestations in common as well as their own individual characteristics. In general, patients with meningitis present with signs of meningeal irritation such as fever, chills, severe headache, vomiting, impaired consciousness, limb movement disorders, epilepsy, cranial nerve palsy, and cervical ankylosis. Different types of meningitis may be accompanied by other clinical manifestations, such as viral meningitis with loss of appetite, diarrhea, and general malaise; septic meningitis with hemorrhagic rash; tuberculous meningitis with tuberculosis toxemia, such as low-grade fever, night sweats, loss of appetite, and general malaise; and cryptococcal meningitis, which often involves the optic nerve and can cause optic nerve palsy.