Multiple Sclerosis (MS) is a chronic disease that affects the central nervous system, which includes the brain and spinal cord. It occurs when the immune system mistakenly attacks the protective covering of nerve fibers, known as myelin. This damage disrupts communication between the brain and the rest of the body, leading to a variety of symptoms. Symptoms of MS can vary widely and may include fatigue, difficulty walking, numbness, and vision problems. The exact cause of MS is not fully understood, but it is believed to involve a combination of genetic and environmental factors. There is currently no cure, but treatments are available to help manage symptoms and slow disease progression.