Disseminated superficial actinic porokeratosis (DSAP)

Definition:

Porokeratosis is a disorder of keratinization characterized by atrophic patches surrounded by a ridge of keratin called cornoid lamella. Disseminated superficial actinic porokeratosis (DSAP) is the most common form of porokeratosis. It is induced by exposure to ultraviolet light and usually appears during the third or fourth decade.

References:

[1]. Jenny Murase, et al. Disseminated superficial actinic porokeratosis co-existing with linear and verrucous porokeratosis in an elderly woman: Update on the genetics and clinical expression of porokeratosis. J Am Acad Dermatol. 2010 Nov;63(5):886-91. [Content Brief]

[2]. Kusumika Kanak, et al. Disseminated superficial and warty type of porokeratosis: a rare coexistence. Indian J Dermatol. 2011 Sep-Oct;56(5):576-7. [Content Brief]

[3]. P Sertznig, et al. Porokeratosis: present concepts. J Eur Acad Dermatol Venereol. 2012 Apr;26(4):404-12. [Content Brief]

[4]. S P Shumack, et al. Disseminated superficial actinic porokeratosis: a clinical study. J Am Acad Dermatol. 1989 Jun;20(6):1015-22. [Content Brief]

[5]. Shigeru Kawara, et al. Disseminated superficial actinic porokeratosis in a patient undergoing treatment with long-term narrowband ultraviolet B for psoriasis. J Dermatol. 2011 Jun;38(6):585-7. [Content Brief]

[6]. Z H Zhang, et al. A mutation in SART3 gene in a Chinese pedigree with disseminated superficial actinic porokeratosis. Br J Dermatol. 2005 Apr;152(4):658-63. [Content Brief]

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