You and I are on the same boat...I started twitching a few weeks ago -- thought the big A (during down times I still think it but this forum has saved me) the thing is -- im looking at every little thing -- im comparing my hands, my legs, my ankles, my biceps -- im measuring everything, im looking at details to see whats different, im working out way more than i should cause I am trying to prove to myself I am not weak.. But logically -- heres the thing -- the more you look for something - youre bound to find it -- whether its really there or not.I personally dont see any atrophy -- but (and not to add to your anxiety) i feel my hands look atrophied -- but when i take pictures of them, they look fine. So pictures are hard to really tell unless you have a severely atrophied hand.With that said -- atrophy is because the muscles are weak and not being used -- how is your hand dexterity? Remember - its not how it FEELS -- its what you can do -- can you do the same things ? If you can then its not atrophy.If you cant then you should see a doctor.