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To the Editor.—
As pointed out in our paper "Clinical Variants of Porokeratosis (Mibelli)" (Arch Derm98: 124, 1968), the following clinical forms of porokeratosis have been described: (1) the classical plaque (Mibelli); (2) the superficial disseminated eruptive form (Respighi); (3) the disseminated superficial actinic porokeratosis (Chernosky and Freeman), which is probably a variant of the Respighi type; (4) the hyperkeratotic verrucose type; (5) the hyperplastic type, and (6) Freund's "forma minima."It is common knowledge that lesions of porokeratosis may be numerous and disseminated and may occur on any part of the body, including the palms and soles. Even the buccal mucosa has been involved. Therefore, we think it is unwarranted to designate a new entity with the title "Porokeratosis Plantaris, Palmaris, et Disseminata," not to mention qualifying it as "A Third Type of Porokeratosis" (Arch Derm104:366, 1971).
Mikhail GR, Wertheimer FW. Porokeratosis. Arch Dermatol. 1972;105(2):296-297. doi:10.1001/archderm.1972.01620050094027