Bacterial meningitis can occur in two ways: when bacteria enter the bloodstream and then travel to the brain and spinal cord, or when bacteria directly invade the meninges, which may be caused by ...
Meningitis is an inflammation of the meninges, the membranes that surround the brain and spinal cord. The microorganisms that cause it can be viruses, bacteria, fungi, and other agents.
Past studies have proposed that migraine headaches occur when something in the cerebrospinal fluid indirectly activates nerves in the nearby meninges, the layers of membrane between the brain and ...