Reliable information about meningitis is available from the websites of the Mayo Clinic, WebMD and the Centers for Disease Control and Prevention. Meningitis results in the inflammation of the tissues around the brain and spinal cord, notes Mayo Clinic.
A meningitis infection may be viral, bacterial or fungal in origin, explains the CDC. It may also be caused by some parasites, cancers, brain injury and drug reactions. While all meningitis is serious, bacterial forms are the most severe and need immediate medical intervention to prevent loss of life and serious complications.
A painfully stiff neck, fever and headache are among the most common symptoms, states WebMD. Vomiting, seizures and lethargy may also be present.