This started six months ago, I saw a dermatologist
for general
acne (very mild), she decided to prescribe me with tretinoin which in my opinion royally ****** me. I broke out badly, she never told me about a "purge". During that purge I got redness around my mouth, chapped lips, and a stuffy nose. I completely stopped tretinoin at that point.
Every since that day I have had chapped lips on and off (every 1-3 days), along with redness in the corners of my mouth.