According to dermatologist Ted Lain, MD, cystic acne is characterized by large, pus-filled cysts under the skin's surface that can be red and painful. It's commonly found on the face but can also ...

If left untreated, these pimples can form sunken, atrophic acne scars on the face. Keep reading to find out exactly what under-the-skin pimples are, what causes them and how to properly treat them.

If left untreated, these pimples can form sunken, atrophic acne scars on the face. Keep reading to find out exactly what under-the-skin pimples are, what causes them and how to properly treat them.

NBC Select editors tested the best acne spot treatments, including gels, pimple patches, and creams from brands like La Roche ...

Cystic acne occurs when oil, skin cells, or bacteria get trapped in your hair follicles and pores. This leads to nodules (lumps) under your skin that may become red or discolored, swollen, or painful.

Ever had small, painful lumps that form under the skin? Did you think they were pimples and waited for them to resolve on their own? That could be the case, unless they only heal slowly, recur, and ...

Post-inflammatory erythema is a red, pink, or purple mark on the skin, often caused by acne. It can last for month, but home and medical treatments are effective. Acne breakouts sometimes leave ...