Diagnosis: Lichen planus
Description: Postinflammatory hyperpigmentation.
Morphology: Hyperpigmentation
Site: Thigh
Sex: M
Age: 77
Type: Clinical
Submitted By: Nameer Al-Sudany
Differential DiagnosisHistory: Asymptomatic, well-demarcated, brownish dots and patches involved the thigh and scrotum of many months duration. The largest patch still showing violaceous hue and Wickham's striae.