Peter Attia· MD
And then there's cystic acne and those are a completely different type of acne where you're getting inflammation that sebaceous pyosbaceious unit. Yep. which is the hair follicle and the oil gland feeding in there and you get swelling deep in the dermis and then you might get enough inflammation and rupture of that cyst that you leave a divot at that point and that causes what we call a valley scar or you might have enough damage even if not picked even if not picked.