I had blotches like that before and it just went away. It was a pigment thing and as some said, it seemed worse after being in the sun frequently. It kinda looked like the opposite of a heat rash. With that said, can't hurt to have someone check it out.

Progressives are the most open minded, tolerant, and inclusive people on the planet, as long as you agree with everything they say, and do exactly as you're told.