Acne on my chin

Okay, so here it is.. i have acne mainly just on my chin & NOTHING will make it go away.

I cut out dairy

I drink water

I go to a dermatologist

Topicals only burn my skin

My skin is dry!! Not oily

I started birth control three months ago for acne

I wash my face twice a day, I moisturizer.

I've changed my face wash, plenty of times.

Literally nothing triggers it. I just have it all the time.