While the precise causes of acne remain complex and not fully understood, our understanding of the condition and its treatment has significantly advanced. Many previously held beliefs have been refined or disproven through ongoing research.
Acne can manifest at any age. While it’s commonly associated with adolescence, its absence during those years doesn’t preclude its development later in life. Genetics does play a role, increasing susceptibility if family members have a history of acne.
Acne is not contagious. Hormonal fluctuations, such as those experienced during menstruation and menopause in women, are often linked to acne development.
Individuals prone to acne often have oil-producing glands highly sensitive to normal testosterone levels. While excessive testosterone production can occur, the sensitivity of these glands is often the primary issue. Women also produce small amounts of testosterone, and in some cases, conditions affecting the adrenal glands or ovaries can lead to overproduction of male hormones, contributing to acne.
Testosterone, or heightened sensitivity to it, triggers increased oil production. Additional factors, including excessive shedding of dead skin cells within hair follicles, follicle narrowing, and irregular cell clumping, contribute to the problem. These factors ultimately lead to clogged follicles containing dead skin cells and oil, resulting in a comedone (a blocked pore).
This environment becomes a breeding ground for Propionibacterium acnes, commonly known as acne bacteria. While typically harmless on the skin, this bacteria thrives on the oil and dead cells within clogged pores. The byproducts of their activity irritate the skin. Excessive bacterial multiplication can cause the follicle wall to rupture, leading to the formation of lesions.
The role of inflammation in acne is a key area of research, offering new approaches to treatment. Inflammation within the skin can attract molecules that degrade collagen, potentially causing permanent scarring. Researchers at the University of Michigan are investigating treatments aimed at reducing the immune system’s inflammatory response to acne. By mitigating inflammation, they hope to prevent or minimize acne scarring.