Acne Vulgaris (Pimples) Acne is a common skin condition where the pores of skin become blocked by hair, oil, bacteria and dead skin cells. It causes whiteheads, blackheads or pimples. It is most common in teenagers and adults. Symptoms: uninflamed blackheads pus-filled pimples or large, red and tender bumps. Factors may contribute to the development… Continue reading How to prevent acne