The ways in which disruptions and imbalances in the ecosystem of bacteria, Demodex mites and other microorganisms on the skin, known collectively as the skin microbiota, may be involved in the development of rosacea were discussed at the summer meeting of the American Academy of Dermatology in New York.
As research continues to reveal the many ways the human microbiome may affect human health, the potential role of Demodex mites in rosacea has come into sharper focus with new technology and may point to new approaches in patient care, according to experts at a roundtable on the clinical implications of Demodex in rosacea.
Medical research has often pointed to the microscopic skin mite Demodex folliculorum as a potential factor in rosacea, specifically the bumps and pimples of subtype 2 (papulopustular) rosacea. Now the mite has surfaced again as a possible offender and therapeutic target for rosacea at this year's American Academy of Dermatology summer meeting.
The physical mechanisms behind flushing, the lifestyles of Demodex mites and proper skin care were among the rosacea-related topics covered at the recent 72nd annual meeting of the American Academy of Dermatology in Denver.
A study in Mexico found further evidence of a potential relationship between a microscopic parasite and rosacea. Several studies have shown that Demodex mites, which are present on the facial skin of all humans, occur in much greater numbers on the faces of people with rosacea.
New information about the causes of eye irritation in rosacea and proper skin care were among the rosacea-related topics presented to dermatologists attending the recent 71st annual meeting of the American Academy of Dermatology (AAD) in Miami Beach.
Demodex mites, the microscopic parasites that are normal inhabitants of facial skin, have long raised the question, "Which comes first, Demodex or rosacea?" as medical experts debate whether their increased numbers on rosacea patients are a cause or a result of the disorder. Now there may be some evidence that the "chicken" — Demodex mites — and not the "egg" comes first, according to a recent scientific report.
Some patients who have red scaly faces may in reality have an increased reaction to the Demodex mite rather than rosacea, according to Dr. Joseph Bikowski, clinical assistant professor of dermatology, Ohio State University.
Dr. Bikowski noted that he has treated more than 100 patients with this condition, which involved reaction to these microscopic mites that are normal inhabitants of human skin. In these cases, he reported that patients treated with a topical medication for Demodex cleared within two to four weeks and remained clear for one to two years.
A new study has found there may be a link between ocular rosacea and bacteria associated with Demodex mites, microscopic inhabitants of normal skin that tend to occur in much greater numbers in those with rosacea.
In the recently published study of 59 rosacea patients, Dr. Jianjing Li and colleagues at the Ocular Surface Center in Miami found a significant correlation between facial rosacea, infestation of the eyes with Demodex mites and reaction to certain mite-related organisms previously shown to stimulate an immune response in rosacea sufferers.1
Results of research funded by donations from members of the National Rosacea Society (NRS) are not only increasing medical understanding of the disorder, but are now revealing potential causes that may lead scientists toward important new advances in therapy.