Lichen Planus Papules

Description

Purplish, shiny, flat-topped papules are distributed along the flexor surfaces of the upper limbs on a standing adult male model, most apparent over the volar forearms and wrists where the skin lies superficial to the flexor carpi radialis and ulnaris tendon contours. With the arms slightly abducted and the palms facing anteriorly, the volar skin of the forearm and wrist sits anterior to the ulna and radius and medial or lateral to the palmar creases and thenar and hypothenar eminences. The torso and anterior chest wall are included for orientation, but the dermatologic emphasis remains on the limb flexor surfaces rather than extensor elbows or the dorsal hands. Lichen planus is a classic pruritic, inflammatory eruption in which distribution matters: clustered papules on the flexor wrists and forearms steer the differential away from psoriasis (extensor bias) and scabies (web spaces and burrows) when you are teaching pattern recognition. Wickham striae may be subtle on skin but become more obvious in oral mucosa, so the keywords “mucosa” and “autoimmune” cue discussion of concurrent buccal or genital involvement and the need to ask about painful erosions. Koebnerization along scratch lines is common, and persistent mucosal disease carries a small but real squamous dysplasia and carcinoma risk, making biopsy and follow-up clinically pragmatic rather than academic. It itches. Use this artwork in dermatology lectures, primary care rash modules, and patient-facing handouts that need a clear, non-photographic rendering of lichen planus papules on a male body habitus without distracting background elements. It also fits well in medical publishing layouts for differential diagnosis tables (lichen planus vs eczema vs drug eruption) and for teaching systemic associations such as hepatitis C screening prompts. Anatomical accuracy verified by SciePro's Medical Advisory Board.