Aseptic meningitis

Aseptic meningitis is the inflammation of the meninges, a membrane covering the brain and spinal cord, in the absence of a positive test on a routine bacterial culture of the patient's cerebral spinal fluid. The most common cause of aseptic meningitis is nonpolio enteroviruses. Other causes include infectious and non-infectious agents such as mycobacteria, fungi, spirochetes, parameningeal infections, medications, and malignancies.

The most common cause of aseptic meningitis is enteroviruses, which are responsible for 85-90% of cases)