My dad has a degenerative spinal condition and walks VERY slowly with a cane. He can't really get around without "The Cane" in an open area, but can move around his house fine by keeping a hand against a wall or countertop for balance.
He works full time and needs zero assistance with anything at all, but my mother feels the need to tell people about him before they meet him, like she's warning them or something. Like they're going to gasp in horror at the sight of a man with a cane.
Growing up it never occured to me to tell anyone "about him" before they came to my house, or saw him somewhere.
I also have an aunt whose brain grew faster than her skull, causing her to be 46 years old with the mentality of a 5 year old. She'll never be able to advance cognitavely past that level. I never felt the need to explain her either.
What's your experience with disability in your family?