Dermoscopy of Black-spot Poison Ivy

Author

Ryan K. Rader
Ruipu Mu
Honglan Shi, Missouri University of Science and TechnologyFollow
William V. Stoecker, Missouri University of Science and TechnologyFollow
Kristen A. Hinton

Abstract

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. © 2012 Dermatology Online Journal.

Recommended Citation

R. K. Rader et al., "Dermoscopy of Black-spot Poison Ivy," Dermatology Online Journal, University of California, Davis, Jan 2012.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 University of California, Davis, All rights reserved.

Publication Date

01 Jan 2012