Hi there. I have cystic acne. Sounds like what you're describing. They take forever to heal? That's how mine are.

Have you tried talking with a doctor about this? Nothing cleared mine up. Literally nothing helped. However, I went to the doctor and he prescribed Clindamycin Phosphate 1% topical solution, it's very inexpensive, and it works wonderfully. You may want to look into it also.