What is BFS? Brisk reflexes? My husband is in the early stages of being examined, has progressive muscle weakness, muscle atrophy, instability, he has these small movements under his skin, like twitching, he doesn't feel them though. He has no pain, numbness or tingling anywhere. Negative MRI, notable nerve damage in left leg resulting in drop foot, showing signs of nerve abnormalities in right leg and abnormal yet inconclusive results in arms. Dr. are reluctant to call it A.L.S. yet won't rule it out either. Seeing specialist at U.S.C. Dr. Beydoun whose speciality is Myasynthis Gravis. Will he be knowlegable enough to diagnose A.L.S. if that's where we are headed?