Diagnosis: Lichen planus actinicus
Description: Annular plaques.
Morphology: Annular
Site: Chest
Sex: M
Age: 18
Type: Clinical
Submitted By: Nameer Al-Sudany
Differential DiagnosisHistory: A teenager male presented for the first time at April with multiple pruritic annular plaques with hyperpigmented centers and mauve-colored borders on sun exposed areas (both neck sides, V area of the chest and extensor surfaces of both forearms). It is of interest to note linear lesions on forearms (lesions occurred at scratch sites as an Isomorphic phenomenon).