I want ShawnW in here for this one.
While I can give you a myriad of possible *** onsets, he's much better equipped to explain anxiety components.
It doesn't SOUND like ***. You have a number of things on your side. Foremost, your age. Next, no actual weakness (when you say 'harder to curl', do you mean fatiguing faster? Your atrophy is questionable. If it were caused by *** it would have shown up on an EMG. The only thing this could appear to be is PLS (which you don't want either, but it's better than ***; kinda) or a muscle disease -- both of which are also hugely unlikely, again, thanks to your age and lack of clonus (did you have a positive babinski?). If I had verbatim reports of what's happened at these visits it would be much more helpful (no offence, but you cannot trust anxious people to be accurate). If this has affected a large amount of muscle (which you think it has) it would VERY DEFINITELY show up on an EMG. Were the EMGs completely clean or abnormal in any way? What about nerve-conduction?
You've got me.
Have you had an MRI?
How anxious would you assess yourself to be truthfully? Are you tense?
Have your reflexes changed over the course of the time that he has seen you? Can you pull record of what your reflexes were documented as before?
Don't rule out anxiety-entirely just yet. Because it could be. My friend has a silent babinski in only one foot, twitches, randomly loses mobility in her hands, and has diminished knee reflex and she's fine. She's just an odd-one neurologically and maybe you are too (I'll add that I suspect she has MS, but she won't get an MRI; I'm not saying she does, she honestly could just be weird -- there is reason to think that she does not as her symptoms always resolve in minutes, but recurr).
Would it be possible to take a photo of your 'atrophy' without revealing, well, you know.
Have you done a Barium Swallow? And what exactly do you mean by, 'cannot feel'. Like numbness or like your throat isn't contracting? I've heard from one anxious fellow feeling as if it was 'too easy to swallow'.