This really sounds like what happened to me 4 years ago. It's horrible and I'm so sorry your going thru this
Looks so similar to mine was, all arond the chin and I believe my skin had a pinkish tint around the mouth/nose aswell.
I got it from using a steroid too strong for my face; when I stopped using it the rash blew up.
It was like 100s of comedones came out of nowhere.
I was put on 100mg of Minocycline as well and given Metrogel (for perioral dermatitis)
I also used organic apple cidar vinegar (diluted 50/50 with water) and used this as a toner!
I didnt use floride toothpaste for YEARS in fear of making it come back.
I ended up taking Accutane when it went away and I havent had a problem since.
(I was put on it because she told me not to use any acne creams for a while but I still had some active ones)
Let me know if you have any Q's; I know there isn't much information out there for this!