Abstract：
Blepharitis is a very common disease in ophthalmology, dermatology and allergy practice. It generally follows a chronic course and is frequently associated with objective and/or subjective symptoms such as epiphora, red eye, dandruff, gritty sensation, itching, burning, photophobia, and blurred vision. The purpose of this study is to analyze the prevalence of Demodex spp. in patients with symptoms of chronic blepharitis. An analytical cross-sectional study was conducted in the period between 2016 and 2020. All patients with symptoms of chronic blepharitis who underwent a parasitological test of eyelashes (Rapitest) in the Dermatology Department of the Hospital Italiano de Buenos Aires were included. Those with previously established blepharitis due to another infectious cause were excluded. We analyzed 972 patients. Sixty percent (n=585) underwent a positive Rapitest for the presence of Demodex spp. Seventy five percent (n=728) were women. There were no significant differences in the prevalence associated with sex (p=0.38). Among the patients positive for Demodex spp., 65% (n=628) were older than 60 years old. The most frequently associated symptom was itching, present in 35% (n=342). A statistically significant decrease in the number of consultations was observed during the cold months of the year (May-June-July-August). Our results show a high prevalence of Demodex spp. in patients with chronic blepharitis. As its presence reveals a direct association with age, we recommend looking for this parasite in this age group.
摘要：
眼睑炎是眼科中非常常见的疾病，皮肤病学和过敏实践。它通常遵循一个慢性的过程，并经常与客观和/或主观症状，如溢泪，红眼,头皮屑,坚韧不拔的感觉，瘙痒,燃烧,畏光,和视力模糊。目的分析蠕形螨的流行情况。有慢性眼睑炎症状的患者。在2016年至2020年期间进行了一项分析性横断面研究。包括在布宜诺斯艾利斯意大利医院皮肤科接受睫毛寄生虫学检查（Rapitest）的所有患有慢性眼睑炎症状的患者。那些先前由于另一种感染原因而建立的眼睑炎被排除在外。我们分析了972例患者。百分之六十（n=585）对蠕形螨属的存在进行了阳性Rapitest。75％（n=728）是女性。与性别相关的患病率没有显着差异（p=0.38）。在蠕形螨属阳性的患者中。,65％（n=628）年龄大于60岁。最常见的相关症状是瘙痒，35％（n=342）。在一年中的寒冷月份（5月至6月至7月至8月），咨询次数显着减少。我们的结果表明蠕形螨属的患病率很高。慢性眼睑炎患者。由于它的存在揭示了与年龄的直接联系，我们建议在这个年龄段寻找这种寄生虫。
