The<unk> s are classified into the following subgroups: Congenital * Simple<unk> s * Diffuse palmoplantar<unk> s * Diffuse epidermolytic palmoplantar<unk>  * Diffuse nonepidermolytic palmoplantar<unk>  * mal de Meleda * Focal palmoplantar<unk>  * Striate palmoplantar<unk>  * Punctate palmoplantar<unk>  * Keratosis punctata palmaris et plantaris * Spiny<unk>  * Focal acral hyperkeratosis * Complex<unk> s * Diffuse palmoplantar<unk>  * Erythrokeratodermia variabilis * Palmoplantar<unk>  of Sybert * Olmsted syndrome * Naegeli–Franceschetti–Jadassohn syndrome * Focal palmoplantar<unk>  * Papillon–Lefèvre syndrome * Pachyonychia congenita type I * Pachyonychia congenita type II * Focal palmoplantar<unk>  with oral mucosal hyperkeratosis * Camisa disease * Ectodermal dysplasias * Clouston's hidrotic ectodermal dysplasia * Acrokeratotic poikiloderma * Dermatopathic pigmentosa reticularis * Syndromic<unk> s * Vohwinkel syndrome * Palmoplantar<unk>  associated with esophageal cancer * Palmoplantar<unk>  and spastic paraplegia * Naxos disease * Striate palmoplantar<unk> , 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<unk> s * AIDS-associated<unk>  * Arsenical keratoses * Calluses * Climacteric<unk>  * Clavi (Corns) * Eczema * Human papillomavirus *<unk>  blenorrhagicum * Lichen planus * Norwegian scabies * Paraneoplastic<unk>  * Psoriasis * Reactive arthritis * Secondary syphilis * Tinea pedis * Sézary syndrome * Tuberculosis verrucosa cutis * Drug-induced<unk>
Keratoderma
Poikiloderma
Chyloderma
Anetoderma
Iododerma
Halogenoderma
Photodermatosis
Xeroderma