Acne starts when the pores in your skin get clogged with oil and dead skin cells.Each pore is connected to a sebaceous gland, which produces an oily substance called sebum,

Extra sebum can plug pores, causing increased growth of bacteria known as Propionibacterium acnes, or P. acnes.Your white blood cells attack P. acnes, leading to skin inflammation and acne. Some cases of acne are more severe than others, but common symptoms include whiteheads, blackheads, and pimples. Many factors may contribute to the development of acne, including:genetics, diet,stress,hormone changes ,infectionsStandard clinical treatments are the most effective for reducing acne. You can also try home treatments, though more research on their effectiveness is needed. When to see a doctor -People with moderate to severe acne should seek professional help to find relief. Prescription-strength acne treatments are available. It may be time to seek professional help from a dermatologist if you:, have acne that leaves dark spots, tried everything and nothing seems to help, have recurring breakouts that clear up and return, get acne in places like your thighs or upper arms, have acne that’s painful and deep under the skin, have breakouts that have been going on for years, have acne that affects your confidence, self-esteem, and social life, think your acne may be linked to a new medication you’re on