Also found in: Dictionary, Thesaurus, Medical, Encyclopedia, Wikipedia. Related to Elective surgery: urgent surgery, Emergency Surgery. SURGERY, med. jur. That part of the healing art which relates to external diseases; their treatment; and, specially, to the manual operations adopted for their cure. 2.
Acne is a common skin disease that causes pimples. Pimples form when hair follicles under your skin clog up. Most pimples form on the face, neck, back, chest, and shoulders. Anyone can get acne, but it is common in teenagers and young adults. It is not serious, but it can cause scars. No one knows exactly what causes acne. Hormone changes, such as those during the teenage years and pregnancy, probably play a role.
For most people, acne stops when their hormones settle down in their early to mid-20s. Some teens may find that their acne stops in the late teen years, around 17 or 18. But for some adults, acne can last into your 30s, 40s, and beyond. Some adults don't see the end of acne until their senior years. However, with positive health steps, you can reduce your acne flare-ups.