Risk factors and prevalence of Demodex mites in young adults

Horváth, Andrea and Neubrandt, Dóra Maja and Ghidán, Á. and Nagy, K. (2011) Risk factors and prevalence of Demodex mites in young adults. Acta Microbiologica et Immunologica Hungarica, 58 (2). pp. 145-155. ISSN 1217-8950

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Abstract

Demodex mites are ectoparasites often found in follicles of facial skin. Their role in human diseases is under investigation, and a growing number of studies indicated that they contribute to chronic inflammatory conditions of the skin, such as rosacea, blepharitis, otitis externa, alopecia and folliculitis. In our study we tested 96 healthy adults for the presence of Demodex mites. Risk factors influencing presence of mites and skin types of the tested individuals were evaluated. We found Demodex folliculorum or Demodex brevis in 17.7% of the samples, more frequently in males (21.9%) and in older adults (20%). Use of make-up seems to reduce the likelihood of Demodex carriage, while pet ownership, use of shared items and living in close contact with older adults had no significant influence of presence of mites. Demodex positive individuals described their skin to be drier, more prone to erythema, but less for folliculitis compared to Demodex negative subjects.

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