I've been dealing with a really red and irritated rash along my mustache line, and it's super dry and itchy. Recently, I also noticed a lump on the right side of my jaw, and I can't figure out why it's there. Plus, my acne seems to be getting worse. I've been using moisturizer and washing my face with 10% benzoyl peroxide, but I've avoided using it in the rashy area for months. I first noticed the dryness and flakiness around the start of the year. Any idea what's going on or what I should do?