So if popping pimples doesn't cause scarring, what does? Long-lasting scars typically turn up after a recurring bout with cystic acne. Cystic acne is a breakout that burrows deep into the skin. These red, painful nodules occur when clogged pores are filled with pus and bacteria, which causes inflammation. Cystic breakouts are often tied to an internal fluctuation of hormones like testosterone (that's why they're common during puberty, monthly menstruation, and perimenopause). "If there is a cyst in the skin, it's going to cause a scar the longer it sits there because pus or bacteria deeper inside the pores cause surrounding inflammation," says Dr. Karolak. And as a result, the inflammation affects the collagen production as well as the fat stores under the skin, creating a visible scar on the surface.
Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.