World Meningitis Day is celebrated every year on April 24, and this year’s theme is “Beat Meningitis”. In fact, meningitis has a wide age range and is encountered when resistance is reduced. ”Meningitis” is an infectious disease of the central nervous system, and common “meningitis” includes “viral meningitis,” “tuberculous meningitis The common types of meningitis include “viral meningitis,” “tuberculous meningitis,” “septic meningitis,” and “novel cryptococcal meningitis. There are three main ways for viruses, bacteria and other pathogenic microorganisms to enter the central nervous system: 1) Bloodstream infection: through mosquito bites, animal bites, use of unclean syringes into the bloodstream, facial infections such as long boils retrograde into the cranium, and infections in pregnant women transmitted to the fetus through the placenta. (2) Direct infection: head trauma penetrates the skull and pathogens can enter the skull. 3) Retrograde infection of the nerve trunk: Herpes simplex virus and rabies virus have strong affinity for the nervous system and can enter the nerve trunk through the nerve endings of the skin mucosa and retrograde into the skull. Common symptoms of meningitis include fever, headache, neck pain, stiff neck, generalized muscle aches, loss of appetite, and generalized weakness. Because the symptoms are similar to those of the common cold, it is easy to be misdiagnosed, so it is important to visit a neurologist when repeated headaches are not relieved to avoid delaying the disease. Some meningitis symptoms are severe and progress very fast, even life-threatening, so early diagnosis and treatment are necessary. In order to prevent meningitis, it is important to pay attention to the combination of work and rest, to avoid staying up late and straining, and to increase and decrease clothing when the weather changes. Strengthen your body to enhance your resistance. If you have symptoms of respiratory tract infection, you should consult a doctor and seek active treatment to prevent intracranial infections.