Acne always related with teenager. People think that they won’t get acne when they come to adulthood. However, many people get acne for the first time as adults or develop acne after years of being relatively pimple free. Even sometimes, teenage acne can continue unabated from teen years into adulthood. This condition is termed as adult acne.Adult acne is when acne occurs in people twenty years of age and above. There are many reasons why acne breaks out. One of the main causes is as a reaction to stress medication.Most people believe stress can causes adult acne break out, especially those who are under high-stress levels. However, the reaction is usually to the medication that they are placed on rather than to the stress itself. Until now, dermatologist still can not identify what the reason medication cause acne reactions. They usually prescribe additional medication to cure the acne.For adult women, they always get adult acne when they stop taking oral contraceptives. The hormones in their body will change once they stop using pill. Research shows that hormones strongly affect the way that the skin looks and behaves. The clogged pores that cause acne to appear are affected by what is happening in the body hormonally.The ovaries produce both estrogen and androgen, where concentration of these two hormones is balance. There is a relation between hormones and the condition of the skin. Adult acne will appear if one of these hormones is out of balance. This causes acne appear and re-appear during woman’s menstrual cycle.In addition to a woman’s own hormones, adult acne may be related to the ingestion of external hormones and drugs that have androgenic effects such as those contained in certain oral contraceptive medications, food products and performance enhancing drugs.There are many effective over-the-counter drugs and treatments for adult acne. However, before you taking any of those treatments, you should know about them and get advice from dermatologist or health care provider.