21. The cause of rosacea is unknown, but one theory involves infection with a tiny worm. 22. The cause of rosacea is unknown. 23. His deformed nose was due to a disease called rhinophyma, which can result from rosacea . 24. Spider veins on the face can be the result of sun exposure, alcohol consumption or rosacea . 25. Rosacea , by its very nature, results in red skin-not an overall green appearance!26. Experts don't know whether women are more susceptible to rosacea or just more appearance-conscious. 27. No one knows what causes rosacea , but it appears linked to the vascular network of the skin. 28. People with rosacea experience flushing in response to sun, hot water, alcohol or eating spicy foods. 29. How does the sun contribute to rosacea , the facial redness experienced by many fair-skinned Americans? 30. These patients were given a second course of rifaximin which again cleared rosacea symptoms and normalized hydrogen excretion.