You could try talking to them... but it would be best if they could see it. And yes, the wind usually escapes the normal way I wouldn't anticipate that the rash would be from drugs this far past the surgery unless you've had a dose within the last 24hrs. Are you taking any new medications? Is it possible it is a reaction to the dressings? Mind you, if it was a reaction to medications, it would look more like welts than heat rash. Rash's are difficult to diagnose because they are so generic and there are so many causes. Do you have any other symptoms?

MG