Acne is a common skin disorder affecting 80 % teenagers. The peak age is 18 years. Males and females are equally affected.
Acne develops on those areas of the skin where sebaceous glands are many in number.
Mainly you get acne on the face, but it also appears on neck, scalp, chest, back, upper arms and shoulders. Lesions of acne are called 'black heads' (open comendones), 'white heads' (closed comendones), papules and nodules (which are inflamed red and are filled with pustules).
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