G35: Multiple sclerosis

Multiple sclerosis (G35) is a long-term illness which involves the immune system attacking the protective layers of nerve fibers in the brain and spinal cord, resulting in communication problems between the brain and the rest of the body. The cause of this condition is not well-understood, but it is thought to be a combination of genetic factors and environmental triggers. Symptoms can vary greatly from person to person, and can include fatigue, difficulty walking, numbness or weakness, muscle stiffness, problems with coordination and balance, and issues with bladder and bowel function. Most individuals with this condition have episodes of worsening function, known as relapses, followed by periods of partial or complete recovery. Over time, the disease may progress and disability may increase. The disease can be diagnosed through a series of tests including brain imaging, spinal fluid analysis, and electrical tests to measure nerve function.