I agree completely. I have a heritable connective tissue disorder that causes me trouble to no end, especially in frequently used muscles, like those in my forearms. I have to be very careful of what I do - not lift too much or grip too hard, avoid too much repetitive motion like typing or gaming, don’t hold things a certain way, etc. Once in awhile, I’ll forget and just do something like I used to, like catching something heavy, and I’ll be fine. Until the next morning, when I wake up in pain. Even then it’s still not awful, it’s the accumulation of multiple events that causes trouble. This isn’t in line with what most people consider a physical disability, so I occasionally get flack from people who think I’m faking. Sometimes I choose to deal with some pain so I can do normal things for a bit, but there’s no way I could do them every day for hours.

My point is a lot of people don’t understand how physical disabilities actually work and seem to love “disproving” your limitations. Especially lawyers fighting against your disability claims.