{{Infobox medical condition |name = |synonyms = |image = Planter keratodermaC.jpg |caption = Diffuse keratodermas affect most of the palms and soles. |pronounce = |specialty = <!-- from Wikidata; can be overwritten --> |symptoms = |complications = |onset = |duration = |types = |causes = |risks = |diagnosis = |differential = |prevention = |treatment = |medication = |prognosis = |frequency = |deaths = |named after = }}

'''Keratoderma''' is a local or general thickening of the horny layer of the epidermis.<ref>{{Cite OED|keratoderma}}</ref>

==Classification== The keratodermas are classified into the following subgroups:<ref name="Fitz2">Freedberg, et al. (2003). ''Fitzpatrick's Dermatology in General Medicine''. (6th ed.). McGraw-Hill. {{ISBN|0-07-138076-0}}.</ref>{{rp|506}}

===Congenital=== * Simple keratodermas ** Diffuse palmoplantar keratodermas *** Diffuse epidermolytic palmoplantar keratoderma *** Diffuse nonepidermolytic palmoplantar keratoderma *** mal de Meleda ** Focal palmoplantar keratoderma *** Striate palmoplantar keratoderma ** Punctate palmoplantar keratoderma *** Keratosis punctata palmaris et plantaris *** Spiny keratoderma *** Focal acral hyperkeratosis * Complex keratodermas ** Diffuse palmoplantar keratoderma *** Erythrokeratodermia variabilis *** Palmoplantar keratoderma of Sybert *** Olmsted syndrome *** Naegeli–Franceschetti–Jadassohn syndrome ** Focal palmoplantar keratoderma *** Papillon–Lefèvre syndrome *** Pachyonychia congenita type I *** Pachyonychia congenita type II *** Focal palmoplantar keratoderma with oral mucosal hyperkeratosis *** Camisa disease ** Ectodermal dysplasias *** Clouston's hidrotic ectodermal dysplasia *** Acrokeratotic poikiloderma *** Dermatopathic pigmentosa reticularis ** Syndromic keratodermas *** Vohwinkel syndrome *** Palmoplantar keratoderma associated with esophageal cancer *** Palmoplantar keratoderma and spastic paraplegia *** Naxos disease *** Striate palmoplantar keratoderma, woolly hair, and left ventricular dilated cardiomyopathy *** Keratitis-ichthyosis-deafness syndrome *** Corneodermatosseous syndrome *** Huriez syndrome *** Oculocutaneous tyrosinemia *** Cardiofaciocutaneous syndrome *** Schöpf–Schulz–Passarge syndrome

===Acquired=== * Acquired keratodermas ** AIDS-associated keratoderma ** Arsenical keratoses ** Calluses ** Climacteric keratoderma ** Clavi (Corns) ** Eczema ** Human papillomavirus ** Keratoderma blenorrhagicum ** Lichen planus ** Norwegian scabies ** Paraneoplastic keratoderma ** Psoriasis ** Reactive arthritis ** Secondary syphilis ** Tinea pedis ** Sézary syndrome ** Tuberculosis verrucosa cutis ** Drug-induced keratoderma<ref name="Bolognia">{{cite book |author=Rapini, Ronald P. |author2=Bolognia, Jean L. |author3=Jorizzo, Joseph L. |title=Dermatology: 2-Volume Set |publisher=Mosby |location=St. Louis |year=2007 |pages=778 |isbn=978-1-4160-2999-1 }}</ref>

==See also== * Palmoplantar keratoderma * List of cutaneous conditions

==References== {{reflist}} ==External links== {{Medical resources | ICD10 = {{ICD10|L|85|1|l|80}}, {{ICD10|L|86||l|80}}, {{ICD10|Q|82|8|q|80}} | SNOMED CT = 707209001 }}

{{Cutaneous ketatosis, ulcer, atrophy, and necrobiosis}}

Category:Papulosquamous hyperkeratotic cutaneous conditions

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