For over the past two weeks, I have had a flat, red rash that appears like a sunburn on my face and
particulary the neck. When I am in the sun
or heat, it increases in itchiness and
burning. A few days before the rash started, I had finished my second five-day course of 750mg Amoxicillin for dental work. Also, a few days (3 or 4) before the rash started, I had a very brief (3 seconds or so) unprotected oral sex exposure of which I was the recipient (I am male, received from female).