Fatigue and muscle weakness are common features of multiple sclerosis. A person with MS could be fine one day and then the next day they may have problems using their arms and legs. Other symptoms of MS could be problems with vision, balancing, stiffness, numbness, and bladder control. The reality of presenting MS cases is that the Social Security Administration normally does not award benefits based on this impairment until the MS has progressed to the point that the symptoms are very obvious. The reason for this is because the symptoms can be so diverse and irregular. The most crucial evidence required by the Social Security Administration is the MRI showing brain or spinal lesions. Once the MRI is submitted, it is hard for the Social Security Administration to deny that MS is present. Of course, if you have MS, the Social Security Administration will want to review medical notes by your neurologist. Neurologists are very reluctant to give a definite diagnosis of MS, even when the MRI clearly shows MS. Many times you will see a diagnosis for MS stated as: “possible multiple sclerosis” or “demyelinating disorder”. However, by definition, a demyelinating disorder of the central nervous system is MS. The most important limitation to focus on is generalized weakness.