What Is Demodicosis (Infestation of Hair Follicles by Demodex Mites)

Demodicosis, also known as Demodex infestation, is a skin condition caused by an overgrowth of Demodex mites. These mites are typically found in small numbers on human skin and are considered a normal part of the skin's microbiome. However, when their population grows out of control, they can cause a range of skin issues.

Demodex mites are microscopic and cannot be seen with the naked eye. They typically reside in the hair follicles and sebaceous glands of the face, particularly around the nose, cheeks, and forehead. While they are often harmless, an overgrowth of Demodex mites can lead to inflammation, itching, and other skin problems.

Symptoms of Demodicosis can include redness, itching, and flaking of the affected areas. In some cases, patients may develop papules, pustules, and nodules. The condition is commonly seen in patients with compromised immune systems, such as those with HIV or leukemia.

Treatment for Demodicosis involves topical and/or oral medications that can reduce the number of mites on the skin. Topical treatments include products containing metronidazole, ivermectin, or tea tree oil. Oral medications may include ivermectin or doxycycline.

Prevention of Demodicosis involves maintaining good skin hygiene and avoiding excessive use of oily or greasy skin products. Patients should also avoid sharing personal items such as towels or bedding with others, as Demodex mites can be easily spread.

In conclusion, Demodicosis is a skin condition caused by an overgrowth of Demodex mites. While these mites are commonly found on human skin, they can cause skin problems when their population grows out of control. If you are experiencing symptoms of Demodicosis, it is important to see a dermatologist for diagnosis and treatment.

By Alexander Brosda, CEO Sokörpe Laboratories

Microscopic image of Demodex mites.; there are ten adults D folliculorum from the skin lesion (A), eight adults and two eggs of D folliculorum (arrow) from the eyebrow area (B). Original magnification 100×.

Primary facial demodicosis near the corner of the right eye.

Images coutesey Renata Przydatek‐Tyrajska, PhD, 2 Aleksandra Sędzikowska, PhD, and Katarzyna Bartosik, PhD