Palmoplantar keratoderma

Definition:

Palmoplantar keratodermas (PPK) comprise a heterogeneous group of keratinization disorders with hyperkeratotic thickening of palms and soles. Sporadic or acquired forms of PPKs and hereditary forms exist. The causes of acquired PPK vary, and include exposure to certain chemicals, side effects of certain drugs, and metabolic disorders. There is as yet no cure for hereditary PPK. In patients with acquired PPK, the cause should be treated or eliminated, if possible. In both instances, optimized treatment can lead to a significant improvement in symptoms. Topical therapy with urea-based ointments improves the skin's absorption of moisture and has keratolytic effects. Topical vitamin D therapy is another option.

References:

[1]. M K Shamsher, et al. Novel mutations in keratin 16 gene underly focal non-epidermolytic palmoplantar keratoderma (NEPPK) in two families. Hum Mol Genet. 1995 Oct;4(10):1875-81. [Content Brief]

[2]. Stina Schiller, et al. Palmoplantar keratoderma (PPK): acquired and genetic causes of a not so rare disease. J Dtsch Dermatol Ges. 2014 Sep;12(9):781-8. [Content Brief]

[3]. Tomo Sakiyama, et al. Hereditary palmoplantar keratoderma "clinical and genetic differential diagnosis". J Dermatol. 2016 Mar;43(3):264-74. [Content Brief]

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