The exact cause of rosacea still remains a mystery. The basic process seems to involve dilation of the small blood vessels of the face. Suspected causes of rosacea include but are not limited to genetic factors, sun exposure, Demodex folliculorum (a mite sometimes found in hair follicles), the bacteria Helicobacter pylori (associated with stomach ulcers), gastrointestinal disease, and medications that cause blood vessels to widen. There seems to be a hereditary component to rosacea in a large number of people. Often people have close family members with rosacea.

No.

Rosacea is currently not considered a curable condition. However, it can usually be controlled with proper treatments. Some forms of rosacea may be significantly cleared for long periods of time using laser, intense pulse light, photodynamic therapy, or oral medication such as oral antibiotics or isotretinoin.