Dermaroller Causing Ongoing Inflammation or What?

I used a dermaroller 1.5mm on my face 8 months ago, I applied a vit a/d ointment for 7 days (retinyl acetate and vitamin d2). Ever since then I've experienced burning and irritation. All topicals I've tried have stinged and irritated the skin further, and even though I only apply something on the forehead I get stinging all over the face after a while. I am very sensitive to especially heat but also the sun. I keep getting small pitted scars on my face, they are quite shallow. What is wrong?