101例疥疮皮肤镜图像分析

Analysis of dermoscopic images of 101 patients with scabies

目的总结分析疥疮的皮肤镜特征。方法收集2022年1月至2023年4月在长沙市第一医院皮肤科门诊确诊为疥疮的101例患者的皮肤镜图像,总结镜下特征。结果101例(100%)镜下均可见隧道结构,97例(96.04%)有咖啡色三角形结构,10例(9.90%)出现褐色小点结构,8例(7.92%)出现隧道边缘的“灰界线”,2例(1.98%)见隧道中央灰白色结构,4例(3.96%)可见淡褐色虫体,1例(0.99%)可见暗红色透亮虫体。结论疥疮在皮肤镜下的特征性结构为隧道及咖啡色三角形结构,其他非特征性结构如褐色小点、灰界线、隧道中央灰白色结构等对于皮肤镜诊断疥疮也具有一定的参考意义。

Objective To summarize and analyze the dermoscopic features of scabies.Methods Dermoscopic images of 101 patients with scabies were collected from the dermatology clinic from January 2022 to April 2023,and the microscopic features were analyzed.Results The burrows were visible in all cases(100%).Triangular structure in coffee color and brown dotted structure were observed in 97 cases(96.04%)and 10 cases(9.90%),respectively.Eight patients(7.92%)had“gray-edged line”sign and 2 cases(1.98%)showed a gray-white structure in the middle of burrow.Light-brown and dark-red transparent mites were found in 4 cases(3.96%)and 1 case(0.99%),respectively.Conclusions The characteristics of scabies under a dermoscope include burrows and coffee-colored triangular structure.Other non-specific structures,such as brown dots,“gray-edged line”sign and gray-white structure in the center of burrows,are also helpful for the dermoscopic diagnosis of scabies.