Olmsted syndrome is a rare congenital, sharply circumscribed transgredient palmoplantar keratoderma. It was first described by Olmsted in 1927. The diagnosis of this rare disease depends on clinical features like symmetrical involvement of keratoderma of the palms and soles and the symmetrical hyperkeratotic plaques around the body orifices. It starts in the neonatal period or in childhood. The...

BACKGROUND Pachyonychia congenita (PC) is a rare autosomal dominant disease whose main clinical features include hypertrophic onychodystrophy and palmoplantar keratoderma. The new classification is based on genetic variants with mutations in keratin KRT6A, KRT6B, KRT6C, KRT16, KRT17, and an unknown mutation. Here, we present a case of PC with unusual clinical and histological features and a fav...

introduction: papillon-lefèvre syndrome(pls) characterized by palmoplantar hyperkeratosis is a rare autosomal recessive genetic disorder with rapidly progressive periodontitis and premature loss of both deciduous and permanent teeth. in this study, we report the clinical and radiographic features of papillon-lefèvre syndrome in an 11- year-old girl and we also discuss the history and various th...

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 ...