No inflammatory lesions (no papules or pustules).
Rare non-inflammatory lesions (comedones) and rare papules.
Some non-inflammatory lesions and a few inflammatory lesions (papules/pustules only).
Many non-inflammatory lesions, many inflammatory lesions, but no nodular lesions.
Numerous non-inflammatory and inflammatory lesions, and typically a few nodular lesions.
Last Comprehensive Review: 2026
