Lichen planus pigmentosus
Encyclopedia
Lichen planus pigmentosus is an uncommon variant of lichen planus
characterized by hyperpigmented, dark-brown macules in sun-exposed areas and flexural folds.
Lichen planus
Lichen planus is a chronic mucocutaneous disease that affects the skin, tongue, and oral mucosa. The disease presents itself in the form of papules, lesions, or rashes. Lichen planus does not involve lichens, the fungus/algae symbionts that often grow on tree trunks; the name refers to the dry and...
characterized by hyperpigmented, dark-brown macules in sun-exposed areas and flexural folds.