Severe nodulocystic acne: It causes multiple inflamed cysts and nodules that often turn deep red or purple if left untreated. They can also leave scars. Acne can develop anywhere on your body, but ...
Pimples from nodular acne are larger and more painful than mild acne. Nodular acne can occur anywhere on your body but often appears as hardened lumps on the face, back, neck, or chest. You may feel ...