Setting aside the notion of determining the number of individual animals on the planet for a moment, merely determining the number of species on the Earth is challenging. Science has only been able to offer estimates thus far, and totals vary greatly.
A. A. A. Multiple sclerosis, or MS, is a long-lasting disease that can affect your brain, spinal cord, and the optic nerves in your eyes. It can cause problems with vision, balance, muscle control, and other basic body functions. The effects are often different for everyone who has the disease.
Brain Diseases: Infections. Brain diseases in the category of infections include: Meningitis: An inflammation of the lining around the brain or spinal cord, usually due to infection; Neck stiffness, headache, fever, and confusion are common symptoms.rain Diseases: Seizures. Included in the seizure category of brain diseases is epilepsy, a condition characterized by recurring seizures caused by abnormal and excessive electrical activity in the brain. Head injuries, brain infections, and strokes may cause epilsepsy, as well.