Frequently Asked Question
what causes rosacea?
Although the exact cause of rosacea is unknown, various theories about the disorder's origin have evolved over the years. Facial blood vessels may dilate too easily, and the increased blood near the skin surface makes the skin appear red and flushed. Various lifestyle and environmental factors -- called triggers -- can increase this redness response. Acne-like bumps may appear, often in the redder area of the central face. This may be due to factors related to blood flow, skin bacteria, microscopic skin mites (Demodex), irritation of follicles, sun damage of the connective tissue under the skin, an abnormal immune or inflammatory response, or psychological factors.
Is rosacea contagious?
No. Rosacea is not considered an infectious disease, and there is no evidence that it can be spread by contact with the skin or through inhaling airborne bacteria. The effectiveness of antibiotics against rosacea symptoms is widely believed to be due to their anti-inflammatory effect, rather than their ability to destroy bacteria.
Is rosacea hereditary?
Although no scientific research has been performed on rosacea and heredity, there is evidence that suggests rosacea may be inherited. Nearly 40 percent of rosacea patients surveyed by the National Rosacea Society said they could name a relative who had similar symptoms. Recent research in twins showed that the aggregate contribution of genes to the presence of rosacea is almost half, with environmental effects accounting for the rest.
Can rosacea be diagnosed before you have a major flare-up?
It is sometimes possible to identify "prerosacea" in teenagers and persons in their early 20s. These individuals generally come to the dermatologist for acne treatment and exhibit flushing and blushing episodes that last longer than normal. The prolonged redness usually appears over the cheeks, chin, nose or forehead. These patients also may find topical acne medications or certain skin-care products irritating.