Bazex-Dupré-Christol syndrome / acrokeratosis paraneoplastica of Bazex

A cutaneous condition characterized by psoriasiform changes of hands, feet, ears, and nose, with involvement of the nails and periungual tissues being characteristic and indistinguishable from psoriatic nails. The condition is associated with carcinomas of the upper aerodigestive tract.

A rare X-linked condition typically including follicular atrophoderma, multiple basal cell carcinomas, hypotrichosis, and hypohidrosis.