5 Possible Causes of Rosacea
Allison Tsai | April 4, 2013
Currently, scientists do not know what causes rosacea, although research has pointed to certain possibilities. Here are some things that might contribute to the condition.
Rosacea tends to run in families, which means that it’s possible that parents can pass on rosacea genes to their children.
Research has found that most people with the acne-like version of rosacea have an overactive immune response to a bacterium called bacillus oleronius. Though scientists aren’t sure if this actually causes rosacea, it may be a clue to the immune system’s role in the condition.
H pylori bug
A bug that causes infection in the intestines, H pylori, may have a role in causing rosacea. Scientists have found that many people with rosacea have H pylori infections. But, they cannot prove that it causes the condition, as many people without rosacea also have H pylori infections.
Demodex, which is a mite that lives on everyone’s skin, could be a cause of rosacea. These mites live on the nose and cheeks, which is largely where rosacea shows up. Studies have found that people with rosacea have a large number of these mites living on their skin. However, there are also people without rosacea who have large numbers of these mites on their skin, which makes it hard to say this is a definite cause of the condition.
Cathelicidin is a protein that normally protects the skin from infection, but it could be the cause of redness and swelling in people with rosacea. The way the body processes this protein could be causing the condition.