Brain tumor (Headache, Vomiting, Giddiness, Syncope, convulsion/seizure, Loss of consciousness, altered behavior, limb weakness)
Stroke (Headache, Vomiting, Weakness of limbs, Difficulty in speaking or swallowing, vision problems, altered behavior, Loss of consciousness)
Spine (Back pain, Neck pain, Limb weakness and paraesthesias, Numbness/stifffness/heaviness, Bladder bowel complaints)
Meningitis (fever, neck stiffness, headache, altered behavior, seizures)
Trauma