I'm 16 now and I've had mild acne for a few years. I went to the doctor last year and he prescribed me a benzoyl peroxide wash and topical cream (Acanya). It cleared up my face immensely, although I'd still get a few pimples on my cheeks, chin, or nose area every now and then. But ever since school ended this year, I've been breaking out pretty badly only on my cheeks (the rest of my face is mostly clear). Every other day or so, I get 1 or 2 new pimples on my cheeks. This may not seem like a lot, but previous pimples there take at least a week to disappear if I don't pick them (even then they still leave redness and visible irritation). The pimples start out as small raised lumps, then transition into a whitehead that turns into a hardened yellow surface. They don't respond to any of the salicylic acid treatments, benzoyl peroxide treatments, or home remedies I've tried. I've popped them too, and they sometimes leave a scar but popping them seems like the only way to get rid of them. Right now, I've got a decent amount of small but noticeable scars on my cheeks. I'm just very frustrated as I take good care of my face but it only seems to get worse. Again, I only get acne on my cheeks. Any suggestions to get rid of this?
On a separate note, two pimples on either side of my face bordering my cheek/jawbone area have disappeared, but left small, hardened tissue beneath the surface of where they were. What are these?