Background Hereditary palmoplantar keratodermas (PPK) represent a heterogeneous group of rare skin disorders with epidermal hyperkeratosis the palms and soles, occasional additional manifestations in other tissues. Mutations at least 69 genes have been implicated PPK, but further novel candidate mutations are still to be found. Objectives To identify underlying PPK cohort 64 patients. Methods D...

Pachyonychia congenita is a rare type of ectodermal dysplasia further classified into 4 types. Cutaneous manifestations seen in most of the cases of Pachyonychia congenita include palmoplantar keratoderma, follicular hyperkeratosis, wedge shaped nails, oral leukokeratosis and woolly hair. A 25-year-old male presented to us with thickened nails and scanty scalp hair. On examination, we noticed h...

Naxos disease is a recessively inherited condition with arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) and a cutaneous phenotype, characterised by peculiar woolly hair and palmoplantar keratoderma. The disease was first described in families originating from the Greek island of Naxos. Moreover, affected families have been identified in other Aegean islands, Turkey, Israel an...

Mal de Meleda (MDM) is a rare form of recessive transgressive palmoplantar erythrokeratoderma for which mutations in the ARS gene have been identified recently. The ARS gene encodes SLURP-1, a secreted epidermal neuromodulator involved in epidermal homeostasis and inhibition of tumor necrosis factor-alpha release. A 27-year-old Taiwanese woman who had a history of palmoplantar keratoderma since...

Palmoplantar keratoderma (PPK) is a heterogeneous group of hereditary and acquired disorders characterized by abnormal thickening of the palms and soles. There are three clinical patterns: diffuse, focal, and punctuate. Palmoplantar keratodermas can be divided into the following functional subgroups: disturbed gene functions in structural proteins (keratins), cornified envelope (loricrin, trans...

Aquagenic palmoplantar keratoderma (APPK) classically presents as exaggerated wrinkling of the palms after brief immersion in water that lasts 10 minutes to a few hours. We present case report 19-year-old female who presented with peeling, sensitivity, and pain on her palmar hands, most prominently fingertips, persists for several an hour touching water. This highlights unique presentation APPK...

Synaptosomal-associated protein 29 (SNAP29) is a t-SNARE protein that is implicated in intracellular vesicle fusion. Mutations in the SNAP29 gene have been associated with cerebral dysgenesis, neuropathy, ichthyosis, and keratoderma syndrome (CEDNIK). In patients with 22q11.2 deletion syndrome, mutations in SNAP29 on the nondeleted chromosome are linked to similar ichthyotic and neurological ph...