Meningitis is an infection of the meninges, which are membranes that surround the brain and spinal cord. Anyone, including adults, can develop meningitis. However, the risk is higher in people with weakened immune systems and in young children. Signs and symptoms of meningitis include: Meningitis often occurs due to pathogens such as viruses, bacteria, and fungi, and so the type of treatment a person receives will vary. Read on to learn more about meningitis in adults, including the causes, symptoms, and treatment options. Meningitis is a condition that causes inflammation of the meninges. The meninges form a protective membrane that surrounds the brain and spinal cord, and contribute to the blood-brain barrier. Meningitis often occurs when viruses, bacteria, and fungi infect the meninges, resulting in inflammation and swelling. The condition can be fatal , because as the meninges swell, they begin to press on the brain and spinal cord, disrupting crucial biological processes. Cancer...