
Comedonal
Blackheads & whiteheads
Open comedones (blackheads) and closed comedones (whiteheads) form when a hair follicle becomes blocked by a mix of sebum and dead skin cells. The blockages are not inflamed, can persist for weeks, and occasionally progress to inflammatory acne. Comedonal acne is usually mild to moderate.
- Blackheads
- Whiteheads
- Small non-inflamed bumps
- Common lesions
- Blackheads, whiteheads
- Presentation
- Non-inflamed, congested pores
- Severity
- Usually mild to moderate
- Key feature
- Follicular plugging
- Scarring risk
- Low — mostly non-inflamed









