Stucco keratosis was first described by Kocsard and Ofner in 1965, and later by Willoughby and Soter in 1972. Stucco keratosis is a keratotic papule that is usually found on distal lower acral extremities of males. The lesion is asymptomatic and patients usually don't complain of having the lesions.
Stucco keratosis appears to be produced by thickening of the epidermis.
The surface may be regularly distributed into folds with elongation of papillae. The stratum corneum is thickened. Surface friction may contribute to the development of the lesions. The tumor grows outward and does not penetrate. The lesions are usually found in elderly patients.