Acne, a common skin condition, causes pimples like whiteheads, blackheads, or inflamed cysts. It occurs when pores clog with excess oil and dead skin cells, forming a plug (comedone). Whiteheads stay under the skin; blackheads darken when exposed to air. Bacteria in clogged pores can cause inflammation and pimples. Severe cases may form painful cysts (nodulocystic acne). Acne affects all ages, often linked to genetics and hormonal changes.
