A Case of Unilateral Blaschko-Linear Lichen Planus Pigmentosus in a Seven-Year-Old Female: A Rare Presentation

Abstract

Lichen planus pigmentosus (LPP) is a rare form of lichen planus that typically affects middle-aged people with darker-pigmented skin. LPP is associated with a longer clinical course than classical lichen planus, which distinguishes it clinically. Its occurrence in children is uncommon, with few reported cases in this population in the literature. We report a rare presentation of unilateral blaschkoid LPP in a seven-year-old Saudi Arabian female patient.

Keywords: blaschko linear lichen planus pigmentosus; blaschko lines; lichen planus pigmentosus; pediatric skin; rare skin disease.

Figure 1. Left thumb showing purple papular skin rash

Figure 2. Dorsum of the left thumb showing skin rash

Figure 3. Left flank showing skin rash

Figure 4. Left abdomen showing skin rash

Figure 5. Rash on left back