Advice on road rash?

Weird rash on foot (NSFW cause hairy foot)

Rash back of neck

Anybody know what this rash could be from?

Should I be worried about this red rash that appeared

Rash / HIV? 😅

Weird rash on hand. What is this?

Red dots on edge of feet is it a rash ? Contagious ?

Sudden rash like this has appeared?

Is this heat rash?

Road rash scar

Red rash feels like acid