Rosacea disease and Demodex spp. relationship; Retrospective study

Rosacea.Method: In our study, the patient group who visited Sivas Numune Hospital Dermatology Outpatient Clinic betweenJanuary 01, 2018 and September 25, 2018, and was diagnosed with Rosacea was observed with respect toDemodexspp.Samples were taken from 338 patients with the procedure of Standardized Skin Surface Biopsy (SSSB).Results: The presence of Demodex spp. was found to be positive in 166 (49.1 percent) of 338 rosacea patients. Whenthe patients are evaluated based on gender, 17 (28.9 percent) of 59 male patients and 136 (48.7 percent) of 279 femalepatients were detected to have Demodex spp.and this difference was statistically significant (Table 1). Positivity ofDemodex spp. based on gender was deemed statistically significant (p<0.05).As a result of the analysis by gendergroups, Demodexspp. was identified in 13 (23.6 percent) of 55 rosacea patients under the age of 20 years, 75 (48.7percent) of 154 patients between the age of 20 and 40 years and 78 (60.4 percent) of 129 patients over the age of 40yearsand the difference between groups was statistically significant (p<0.05, Table 2). Positivity of Demodex spp.basedon age groups was found statistically significant (p<0.05).Conclusions: It was surmised that Demodex spp. plays an important role in aetiopathogenesis of rosacea disease, thisparasite should be considered during the treatment planning of the disease and rosacea patients should be investigated interms of Demodex spp.