Central nervous system diseases are diseases that affect the brain, spinal cord, and other nerves in the body. These diseases can make it hard for your body to work the way it should. Examples of central nervous system diseases include epilepsy, Alzheimer's disease, Parkinson's disease, Multiple Sclerosis, and stroke. These diseases can cause problems like having trouble speaking and walking, seizures, memory loss, and more. To help prevent these diseases, it is important to eat healthy, exercise, and get regular checkups with your doctor.