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Rosacea is a skin disorder that causes chronic redness of the face. It can cause swelling, pimples, and the appearance of broken blood vessels. Rosacea usually affects the cheeks, forehead, chin, and nose, but the ears, chest, and back may also be affected. More than half of people with rosacea also have mild eye symptoms, including redness, burning, and watering.

Rosacea Rash

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In some people, especially men, a condition called rhinophyma develops. In this condition, the nose becomes enlarged, bulbous, and red.

The cause of rosacea is unknown. A combination of genetic and environmental factors may be related to its development. Some researchers believe that rosacea is primarily a disorder of the blood vessels, or vascular system, in which something causes blood vessels to swell, resulting in flushing and redness.

A tiny organism called Demodex folliculorum, a mite that lives in facial hair follicles, may possibly be involved. Some researchers believe that these mites clog the sweat gland openings, leading to inflammation. There may also be a link between rosacea and Helicobacter pylori, a bacterium that causes infection in the gastrointestinal system. The immune system may also play a role in the development of rosacea in some people.

Approximately 13 million people in the United States have rosacea. It usually occurs in adults between the ages of 30 and 60. While rosacea cannot be cured, it can be treated and controlled.

What are the risk factors for rosacea?
What are the symptoms of rosacea?
How is rosacea diagnosed?
What are the treatments for rosacea?
Are there screening tests for rosacea?
How can I reduce my risk of rosacea?
What questions should I ask my doctor?
What is it like to live with rosacea?
Where can I get more information about rosacea?


Rosacea. EBSCO DynaMed Plus website. Available at: Updated December 10, 2015. Accessed October 6, 2016.

Color Atlas and Synopsis of Clinical Dermatology. McGraw-Hill; 2000.

National Institute of Arthritis and Musculoskeletal and Skin Disorders website. Available at: November 25, 2015.

National Rosacea Society website. Available at: Accessed November 25, 2015.

Last reviewed November 2015. by Michael Woods, MD

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.

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