Acne is a skin problem for many. During the teenage years this skin disorder arises. During teenage years the male sex hormone, androgens increases both in male and female. This increased androgen causes overproduction of keratin and sebum. This keratin and sebum clogs the skin pores. In the clogged skin pores the presence of bacteria creates acne. Acne creates black spots on the skin if not taken care of properly. Even after the teenage years, when acne is no more around, the black spots on the skin remind you about acne. Before you can treat your acne, it is important to understand that there are different types of acne. By understanding what type of acne you have, will help you choose the right treatment to control or cure it. More on acne in middle aged men & women.