Meningitis is the inflammation of the membrane around the brain and spinal cord. Meningitis usually is the cause from a virus, but there have been cases where a patient contracted meningitis from a bacterial or fungal infection. Symptoms often include high fever, severe headache, neck stiffness, loss of appetite, and sensitivity to light. Those of who have not received their childhood or adult vaccines are a risk factor to contracting meningitis, as well as an immune system that is not at its best. This is why meningitis may affect young children and elderly people due to their weaker immune systems.

 

http://www.mayoclinic.org/diseases-conditions/meningitis/symptoms-causes/dxc-20169522