Acne vulgaris; Cystic acne; Pimples; Zits
Acne commonly appears on the face and shoulders, but it may also occur on the trunk, arms, legs, and buttocks.
- Crusting of skin bumps
- Papules (small red bumps)
- Redness around the skin eruptions
- Scarring of the skin
Signs and tests
Your doctor can diagnose acne based on the appearance of the skin. Testing is usually not required.