What is meningitis: What causes meningitis?

What is meningitis?  Meningitis is a life threatening inflammation of the meninges  that causes  sensitivity to light and sound, altered thinking, confusion, headache and neck stiffness.  The most common symptom, however, is a severe headache.  Meningitis can be life threatening because of the meninges proximity to the brain and spinal cord.  Inflammation to the meninges is rarely caused by medications, and is most commonly caused by bacterial and viral infections.  [Read more...]