Acne is blocked hair follicles that form blackheads, pimples and tender lumps. It affects nearly 50 million Americans each year and about 9.4% of people worldwide, research points to four linked causes and proven treatments, and talking with a doctor is the practical next step. Most cases start in puberty and affect 85% of adolescents. Breakouts often persist in adults, especially women, with rising incidence in both teens and adult women.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- Who gets acne?
- How do breakouts form?
- Which treatments have the strongest support?
- What about diet, mood and scars?
- What should you do next?
Who gets acne?
The American Academy of Dermatology reports that acne is the most common skin condition in the United States, affecting nearly 50 million Americans yearly, in updated acne guidance. Onset usually occurs in puberty. Many adults continue to have breakouts, especially women.
Global patterns match the United States. A cosmetics epidemiology review published May 22, 2025 places worldwide prevalence near 9.4%. The same review identifies acne as one of the most common diseases worldwide.
How do breakouts form?
Four linked processes create acne. Excess sebum combines with abnormal follicular keratinization, which traps oil and dead cells inside the follicle. A 2025 antibiotics scoping review describes the next steps as Cutibacterium acnes overgrowth with loss of strain diversity, plus inflammation. That sequence turns clogged pores into comedones and inflamed lesions.
Washington University researchers added detail in September 2025. They found C. acnes needs a protein called RoxP to colonize skin and built a test to detect it. The work clarifies bacterial causation and may help diagnose device infections.
Which treatments have the strongest support?
The 2024 American Academy of Dermatology guidelines strongly recommend topical benzoyl peroxide, retinoids and antibiotics in fixed combinations, plus oral doxycycline, according to Academy reporting in treatment guidance summarized by MDedge. For severe, scarring or treatment-resistant acne, the guidelines strongly recommend oral isotretinoin.
Another option targets oil at the hormone receptor. Clascoterone 1% cream received FDA approval in 2020 as the first topical anti-androgen for acne, then approval in Canada in 2023, Australia and New Zealand in 2024, and the United Kingdom in 2025, according to DermNet in its clascoterone overview. It reduces sebum by blocking androgen receptors in skin.
What about diet, mood and scars?
Food links remain inconsistent. A JAMA Dermatology NutriNet-Sante cohort linked daily sugary drinks to 18% higher odds of current acne and daily milk to 12% higher odds. Pooled meta-analyses found no significant overall effect.
The effects reach beyond skin. A Journal of the American Academy of Dermatology meta-analytic review links acne to higher depression and anxiety risk. The same review notes pain, permanent scarring and low self-esteem, and advises aggressive acne treatment plus psychiatric screening when indicated.
What should you do next?
The National Institute of Arthritis and Musculoskeletal and Skin Diseases advises discussing options with a primary-care doctor or dermatologist, as described in its acne diagnosis and treatment steps. Bring a list of products you use and prior treatments tried.
- Choose acne-friendly skin care that will not clog pores
- Consider over-the-counter benzoyl peroxide to kill bacteria and lower sebum
- Follow the plan daily and expect gradual improvement over weeks