Arm Twitching

My husbands arms are twitching, you can watch the muscles move in both arms.  He has waekness in his Right arm and some difficulty with speech, drooling ocassionally, can't put his belt through the loops of his pants on the right side.  do you have any suggestions what could cause this?

[twitchingteacher]

I would say he needs to get an appointment with a neurologist. There are probably many things that could cause this, but most of them would be neurological. Did this just start?

[3334l]

my right arm just above the elbow start twitching 2 days ago, some years ago the doctor said the pain in my shoulder was cause by a rotator cuff. could this be acting up after all these years. i use to work in a library lifting heavy books. i have retiried now and don't do any lifting. please help