[Skin concerns] How to treat perioral dermatitis?

I (19f) have had this skin condition earlier this year, but it was very discrete and it went away on itself after 1-2 weeks. This time around, it has gotten much more extreme, the red spots are mainly between my nostrils and mouth, but also under the mouth (kind of forming a circle.) It does not itch, but it has spread quite fast. I noticed it began to arise 2 days ago, and now it affects my mental health and social life.

For people suggesting this, I am planning to go see my doctor tomorrow (we don't have dermatologists in this town), I just wanted to seek others' stories or advice since this doctor has previously mistaken some skin related diseases which has cost me a lot of time and money, so if you could help me in any way, it could potentially cut down on the time and money spent. Thank you.