[Skin Concerns] Please help! My neck has exploded in the last month and is so painful.

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Hey SCA, I have a dermatologist appt on Monday but I’m posting here in the hopes that someone can recognize this before then.I’ve always had hormonal spots on my jaw/neck but literally nothing like this before. Pics of the sides of my neck hereMy neck feels like sandpaper and is very itchy and red. The whiteheads are very painful and swollen. I suspected an allergy but I have not changed products/detergents/clothes.History: I was on .05 tret all of 2020 and my derm upped me to .1 in august. I applied it but never went this low on my neck. I could tell my skin was irritated, so I stopped using it in October. About a month ago. However, my neck has gotten WORSE! Another suspicion I have is that my barrier is damaged? But I’m surprised it’s gotten worse.For the past two weeks, I’ve been very gentle with my skin. I use Cerave Hydrating Cleanser, Hada Labo premium lotion, and the Aveeno Calm+Restore oat serum and moisturizer. Any help or suggestions are very appreciated. I like to think I’m pretty good at skincare but I have no idea what’s going on.
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Submitted by calicalifornya