Primary Lesions -macule -patch -papule -plaque -nodule -tumor -vesicle -bulla -pustule -cyst Secondary Lesions -scale -crust -excoriation -lichenification -maceration -wheal/hive -erosion -ulcer Distinct Lesions -wheal/hive -burrow -comedone -atrophy -keloid -fibrosis -petechiae -telangiectasis -milium
A burrow is a small threadlike curvilinear papule that is virtually pathognomonic of scabies