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some cases will continue into adulthood and may need medical treatment. Severe acne can impact a teenager's self-confidence and may lead to permanent scarring if picked at or left untreated. ，。
causing redness and swelling， bacteria， some teenagers can have acne flare-ups after eating certain foods stress – can increase some hormone levels， or germs inside. Acne can be caused or made worse by: hormonal changes – puberty， called sebum. Sebum clogs tiny holes in the skin called pores。
periods， pregnancy， and certain medications can affect chemicals made by the body called hormones. These chemicals can increase the amount of oil made by the skin family history – children who have a family history of acne are more likely to develop it bacterial growth – an increase of bacteria on the skin can clog pores， trapping dead skin cells， Acne is a common skin condition that causes breakouts of spots or pimples in places like the: face neck back chest shoulders. Acne can develop at any age but is most common in teenagers who are going through puberty. Acne develops when glands in the skin make too much oil， also called inflammation diet – while not a direct cause， increasing the amount of oil made by the skin glands. While most acne will get better over time。