What are some theories on the cause of Rosacea?

Rosacea is a chronic inflammatory skin condition characterized by facial redness, visible blood vessels, and sometimes acne-like bumps. The understanding of its causes has evolved, and current theories suggest that multiple factors may contribute to the development of rosacea.

One significant theory is the role of Demodex folliculorum mites. These microscopic mites are naturally found on the skin's surface and in hair follicles. In individuals with rosacea, there is evidence to suggest that there may be an abnormal increase in these mites, which can lead to inflammation and exacerbation of the condition.

Another factor considered is excessive yeast on the skin, particularly a type known as Malassezia. This yeast can disrupt the skin's microbiome and contribute to inflammatory responses, potentially worsening rosacea symptoms.

Additionally, some research points to intestinal bacteria, particularly dysbiosis—an imbalance in the gut microbiome—as a contributing factor. This imbalance can affect the body's immune response and may be linked to inflammatory skin conditions like rosacea.

Given these theories, it is recognized that multiple factors, including the presence of mites, yeast, and intestinal bacterium, can interplay in the onset and progression of rosacea. Therefore, acknowledging that all these elements may play a role provides a comprehensive view of the