This could be going off on a tangent, but what about those with invisible illnesses?

Someone can be young, look fit and healthy, but still have conditions which make it difficult for them to get around, it seems that in some cases these people would be asked to give up their priority seating, or at the very least would certainly not be offered a seat if there were no room.

I avoid public transport because of that very issue. I look young, fit... you'd only see that I was in pain if you paid careful attention to the way I move.

Perhaps I should get myself a walking stick or something, just so there's something to see to indicate that I am actually disabled.

BW