Hello! Just as info... I have spots on my brain which the neurologists originally thought was MS. Specialist ruled that out because of the type of lesions; looked more like old age spots. He told me I have the brain of an 80 year old; I am 59. The body is a complicated maze and it seems there is no easy answer for any ailment. Took an army of doctors to diagnose pernicious anemia in an extreme state. Perhaps that caused the damage. I'll never know; I just know I have to learn to live with it. It sounds as though your Mom is improving and for that I am happy for you. Keep the faith; things do turn around for the better even when unexpected.