Small red, raised bumps Small red pimples with pus at their tips Solid, often painful lumps beneath the surface of the skin. Large painful lumps filled with pus beneath the skin
Excess oil production by the follicles Hair follicles clogged by oil and dead skin cells Bacteria build up in the pores Hormone levels change during puberty Heredity Certain medications, such as certain birth control pills or corticosteroids A diet high in refined sugars or carbohydrates, such as bread and chips
