sorry but i think the word is quite apt.
all this ultra pc crap is doing my head in (dwarfs are now 'vertically challenged' etc)
the word is used to describe a person who does not have full use of 'all their body parts'.
yes, it covers a massive amount of problems and yes, people to tend to catergorise here, but get rid of the word and you will basically need a whole new way of describing everyone with a 'problem'
someone mentioned the wheelchir problem....totally agree on that, my brother in law has cerebal palsy (mental and physical)....he must be the closest thing to an alien most people have seen judging by the reactions when we take him anywhere.
met a bloke many years ago, he was wheelchair bound and i had to call and see him one day, here he is 'scuttling' around on the floor fitting a kitchen.
disability is only a word and many able bodied should hang their heads in shame with all this pretend bad backs etc just to get a life on the sick.