A patient had a 15-year history of a progressive, recalcitrant, papulosquamous eruption, and persistent hoarseness which seems to be unique. Histologically, the eruption shows parakeratosis, orthohyperkeratosis, atrophy of the malpighian layer, and a lichenoid histiocytic and lymphocytic dermal infiltrate. This cutaneous eruption appears to be previously unreported, and we propose the term "keratosis lichenoides chronica."
Margolis MH, Cooper GA, Johnson SAM. Keratosis Lichenoides Chronica. Arch Dermatol. 1972;105(5):739-743. doi:10.1001/archderm.1972.01620080065020