The most common causes of meningitis are:
viral diseases (cytomegalovirus, herpes virus, measles virus) bacterial infections (staphylococcal, streptococcal, pneumococcal). Syphilis (Treponema pallidum) is also a bacterial infection. When inflammation occurs in brain cells, these cells begin to release large amounts of substances that cause acute inflammation of all surrounding tissues and organs. The main signs of the disease are high fever, nausea and vomiting, impaired consciousness and movement disorders. In addition, the patient constantly experiences convulsions and his blood pressure decreases. This provokes swelling in the extremities and disturbances in the functioning of the cardiovascular system. If a patient develops meningoencephalitis, mental disorders may begin, convulsive syndrome becomes permanent, and signs of hemorrhage can cause death. The meningococcal species is most often diagnosed in children, adolescents and young adults.