Is disability a social construct?Watch
I think you could make arguments for and against it, from my experience of having dyslexia and dyspraxia, i don't feel as "disabled" when i m in an environment i m comfortable in but feel much more so when i m put into new situations but if everything was in an easier to read font and directions made more sense then i would feel almost "normal".
i can see what you mean, my sister also has dyspraxia and dyslexia and has said the same; that she feels more "disabled" when in situations that she might find more difficult or that make her uncomfortable. Whereas, at home she will feel "normal". i think that it could be considered a social construct because of the labels and stereotypes that are usually distributed with the idea of being "disabled".
I can't remember the specific names but there is definitely at least one well preserved skeleton that is referred to that had injuries from broken bones which would have prevented signifcant movement and certainly participation in hunting and so on. It also showed the signs of having lived many years after the injuries were occurred (and hence presumably being cared for) however.
Incidentally also a counter argument to the arguments employed by social darwinists regarding "primitivism" in "survival of the fittest", as it quite clearly demonstrates altruism has been a feature of humans and their ancestors for a loooong time (there are of course many other examples of altruism in non-human animals besides, but this is definitely off the topic if the previous comment was).