I myself got heatstroke walking home from buying groceries one day. I was dressed in a nice shirt and shorts, hair brushed. No one stopped. I ended up having to call a cab to take me home maybe 2 blocks because I couldn't walk anymore. He charged me $5 for that short ass ride.

No one cares anymore. Being disheveled might increase your chances of being ignored, but they still don't care if you die if you're a well-dressed man...unless they think they can get something out of it.