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Thus, rosacea is a very acute problem because of its prevalence among the population. In terms of rosacea causes, a certain part is assigned to the parasitic theory [2]. According to this theory, the formation of papules and pustules on the facial skin contributes to the follicular mite (Demodex). The mite belongs to Demodex genus, Demodicidae family, suborder Trombidiformes, class Acariformes. For the first time the mite was revealed by F. Berger in earwax of acoustic meatus of a person in 1841, the same year F.G.J. Henle revealed the mite on human skin. A year after, in 1842 G. Simon established the existence of the parasite in hair follicles and for the first time described the morphological properties, calling them Acarus folliculorum (from Greek – “folliculorum mites”). Later G. Simon and R. Owen attributed the found mites to genus Demodex. Much later, after more than half a century English acarologist S. Hirst (1917-1923) identified 21 species and several subspecies of Demodex mites in animals [3]. Later, studying mite parasitizing on human skin, L.H. Akbulatova discovered and described two forms: Demodex folliculorum and Demodex folliculorum brevis [4]. Demodex mites are equally spread among all races and all age groups [5]. Only rare cases of mite detection at newborns were described [6] and as a whole a low level of dissemination is registered in children. In all probability, this is due to lower production of sebum in children as compared to adults [7]. Analyzing the occurrence frequency of Demodex mites depending on their specific accessory (Demodex folliculorum, Demodex folliculorum brevis), according to literature, it was revealed that Demodex folliculorum is detected more frequently than Demodex folliculorum brevis [2,8].

The Clinical Picture of Rosacea Depending on Demodex Mites