Rader Ryan K, Mu Ruipu, Shi Honglan, Stoecker William V, Hinton Kristen A
Stoecker & Associates, LLC, Rolla, Missouri, USA.
Dermatol Online J. 2012 Oct 15;18(10):8.
Black-spot poison ivy is an uncommon presentation of poison ivy (Toxicodendron) allergic contact dermatitis. A 78-year-old sought evaluation of a black spot present on her right hand amid pruritic vesicles. The presentation of a black spot on the skin in a clinical context suggesting poison ivy is indicative of black-spot poison ivy. Dermoscopy revealed a jagged, centrally homogeneous, dark brown lesion with a red rim. A skin sample was obtained and compared against a poison ivy standard using ultra-fast liquid chromatography-tandem mass spectrometry (UFLC-MS/MS). This finding confirmed the presence of multiple urushiol congeners in the skin sample. Black-spot poison ivy may be added to the list of diagnoses that show a specific dermoscopic pattern.
黑斑型毒葛是毒葛（毒漆树属）过敏性接触性皮炎的一种罕见表现。一名78岁女性因右手出现伴有瘙痒性水疱的黑斑而寻求评估。在提示毒葛接触史的临床背景下，皮肤上出现黑斑提示为黑斑型毒葛。皮肤镜检查显示一个边缘呈锯齿状、中央均匀、深褐色且带有红色边缘的皮损。获取了皮肤样本，并使用超快速液相色谱 - 串联质谱法（UFLC-MS/MS）与毒葛标准样本进行比较。这一结果证实皮肤样本中存在多种漆酚同系物。黑斑型毒葛可能会被列入具有特定皮肤镜表现的诊断清单中。
