A Curious Case of Hyperpigmented Macules with Inducible Wheals

Abstract

Abstract A provisional diagnosis of urticaria pigmentosa was revised to lichen planus pigmentosus with dermatographism, after histopathologic examination of specimen from hyperpigmented patch. It is important to keep differential diagnosis of inducible wheals while making a diagnosis.

Keywords

• darier sign
• dermatographism
• lichen planus pigmentosus
• urticaria pigmentosa