- mild acne, which refers to the whiteheads or blackheads that most of us get at various times
- moderately severe acne, which includes red inflamed pimples called papules and red pimples with white centers called pustules
- severe acne, which causes nodules — painful, pus-filled cysts or lumps — to appear under the skin
Most serious scarring is caused by the more severe forms of acne, with nodules more likely to leave permanent scars than other types of acne.
The best approach is to get treatment for acne soon after it appears to prevent further severe acne and more scarring. If you have nodules, see your doctor or dermatologist for treatment.
