Acne is a condition of the sebaceous glands and it usually starts in the teen years when the hormone androgen stimulates the sebaceous glands of the skin to enlarge, produce oil and plug the pores.

• 痤疮是一种皮脂腺状态，常起病于少年期，由于雄性激素的刺激，皮脂腺增大，产生油脂并堵塞毛孔。