How severe can acne get?

How severe can acne get?

Dermatologists rank acne by severity:

• Grade 1 (mild): mostly whiteheads and blackheads, with a few papules and pustules.
• Grade 2 (moderate, or pustular acne): multiple papules and pustules, mostly on your face.
• Grade 3 (moderately severe, or nodulocystic acne): numerous papules and pustules, along with occasionally inflamed nodules. Your back and chest may also be affected.
• Grade 4 (severe nodulocystic acne): numerous large, painful and inflamed pustules and nodules.