Unna-Thost keratoderma is an autosomal dominant inherited disorder of keratinization, with mutation in Keratin 1 gene. The eponym refers specifically to nonepidermolytic keratoderma, although the original Thost family is now known to have had epidermolytic keratoderma. The condition usually presents in the first few months of life and is usually obvious by the age of 4 years. It rarely appears ...

The association of herpetoid corneal changes with circumscribed palmo-plantar keratoderma was first described by Richner (I938). Hanhart (1947) suggested that this represented a recessively inherited ectodermal syndrome, and the condition is sometimes called the Richner-Hanhart syndrome. Subsequent reports have been relatively few: Cremona (I 957); Kuske (I959); Franceschetti and Thier (I96I); ...

Dear Editor, Clouston syndrome, also called hidrotic ectodermal dysplasia (HED), is an autosomal dominant ectodermal dysplasia characterized by a clinical triad of onychodystrophy, generalized hypotrichosis, and palmoplantar keratoderma (1). Herein we report the case of a 24-year-old male with the distinctive clinical triad associated with multiple epidermoid cysts, which probably reflects the ...