It is one thing to understand what acne is on a medical level, but figuring out what exactly causes these biological processes to occur is a whole different story. The truth is, the exact causes of acne are not fully understood, but it is generally accepted that some of the factors listed below contribute to the problem:
Hormones Trigger Acne
It is well known that acne is oftentimes associated with the teenage years. Why is this? Puberty triggers significant chemical activity that can play with one's hormonal balance, causing the appearance of acne and other skin blemishes. Hormonal activity doesn't just cause acne for teens: women who are pregnant or experiencing menopause also experience hormonal imbalance that frequently causes acne.
Family History and Genetics Cause Acne
Acne tends to run in the family. If your parents had acne when they were children, or if they experience adult acne, your chances of experiencing the same problems is significantly increased.
Stress Causes Acne
Believe it or not, but a stressful life decreases your chances of having clear, blemish-free skin. Stress can trigger an increased release of hormones from your adrenal glands, which can cause acne to form. Many medical studies have been performed, and a clear correlation has been found between increased stress and acne flare-ups.
Medical Problems Cause Acne
There are an assortment of medical problems which cause acne to develop: inflammation, skin irritation and scratching, hyperactive sebaceous glands, the accumulation of dead skin cells which block pores and cause sebum to build up, and bacteria in the pores.
Other Causes of Acne
Acne is also triggered by bringing bad or harmful things into one's body. Exposure to certain chemical compounds, such as chloracne or certain halogens, can trigger the formation of acne. Moreover, amphetamines, similar drugs, as well as anabolic steroids, are all well known to cause acne. In general, if something isn't good for your body, it's not going to be good for your skin.