Acne is not only annoying, but also raises a lot of questions about what can and can't be done to get rid of it.

It's perfectly normal for a pimple to appear on your face now and again, but if this becomes a frequent occurrence, you need to take a few precautions, as it could be acne. "Acne is a complex process of obstruction, inflammation and infection of the sebaceous glands on the face and skin elsewhere on your body. These are the same glands that produce the sebum that lubricates your skin", explains Abdo Salomão, dermatologist and member of the Brazilian Society of Dermatology. "When they become blocked, these glands become susceptible to inflammation and can be infected by bacteria on the surface of the skin."

According to the dermatologist, there are several types of acne. There may be a variety of causes, and treatment varies according to the stage of the condition. The most common causes are hormonal changes, an inappropriate diet and the improper use of creams or cosmetics. In some cases, there is also a genetic predisposition. Read the most common questions about acne and find out how to spot the myths and realities of this condition.