pachyonychia congenital (pc) is a rare autosomal dominant genodermatosis characterized hyperkeratosis affecting the nails and palmoplantar areas, oral leukokeratosis, and cystic lesions. a 39-year-old woman with pc type 1 (jadassohn-lewandowsky syndrome) and b-cell lymphoma is described. no similar disorders or parental consanguinity were found in her family. typical features of pc developed si...

Aquagenic keratoderma (AK) or aquagenic wrinklingis a rare palmoplantar skin disease. It is sporadic orhereditary condition. It appears in childhood or youngadulthood and it is seen as multiple asymptomaticsmall shiny papules on the peripheral margin ofpalms and/or soles after submersion in water. Thepathogenesis and etiology of ASA remains unclear.Drugs sometimes trigger AK. Herein, we present...

Mal de Meleda is a rare form of palmoplantar keratoderma, and recently mutations in the ARS (component) B gene have been identified in families with this disease. We identified a recurrent nonsense mutation, R96X, in four families of Turkish descent. In this report, we demonstrate that these families share a common ancestral haplotype at the mal de Meleda locus, suggesting a founder effect.

An 8-year-old girl with the classic findings of keratoderma hereditaria mutilans (Vohwinkel's syndrome) was seen. Treatment with isotretinoin was instituted to decrease the hyperkeratosis and to prevent further autoamputation. After a 12-week course at 2 mg per kg per day, the patient had only minimal decrease in the amount of hyperkeratosis. Because of the well-known long-term risks of systema...

A 49-year-old man electively chose to undergo a trial of intravenous chemotherapy with 5-fluorouracil (5-FU) for his inherited punctate palmoplantar keratoderma (PPK). His father also had this skin disorder, which coincidentally cleared after 2 courses of chemotherapy consisting of 5-FU and cisplatin to treat his lung cancer, prompting the patient to undergo this trial of therapy. After the pat...

Keratodermas encompass a wide spectrum of disorders of keratinization that may be acquired or hereditary. We present two cases of focal acral hyperkeratosis (FAH), a subtype of punctate palmoplantar keratoderma. We review the literature and attempt to clarify the confusing classification of the heritable punctate palmoplantar keratodermas.

Pityriasis rubra pilaris (PRP) is an uncommon erythematous papulosquamous disorder characterized by erythroderma, palmoplantar keratoderma and follicular hyperkeratosis. Although often exhibited at clinical meetings because of its rarity and difficulty in management, its etiology remains unknown. This article presents a review of this enigmatic disorder and subject of debate. Recent focus are a...

Since 1995, according to the World Health Organisation's classification of cardiomyopathies, Naxos disease has been considered as the recessive form of arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C). It is a stereotype association of ARVD/C with a cutaneous phenotype, characterised by woolly hair and palmoplantar keratoderma.