Autosomal Dominant Palmoplantar Keratoderma And Congenital Alopecia

A rare genetic skin disorder characterized by absence of scalp and body hair and palmoplantar keratoderma, without other hand complications.

Epidemiology

To date, ten individuals with a clinical diagnosis of autosomal dominant palmoplantar keratoderma and congenital alopecia (PPK-CA) have been reported.

Clinical description

Autosomal dominant PPK-CA usually presents during infancy. Its very early onset is often characterized by fading of facial, scalp and body hair within the first months of life without subsequent re-growth. Body and facial keratosis pilaris are additional features which appear in the following years. Palmoplantar keratoderma develops during infancy and may have an unusual pattern, affecting the two sides of fingers and palms, but usually sparing the palmar sides. Periungueal involvement is typical, leading to secondary nail dystrophy. Autosomal dominant PPK-CA seems to have a more benign course than autosomal recessive PPK-CA (see this term).

Etiology

The genetic basis of autosomal dominant PPK-CA is unknown. Transmission appears to be autosomal dominant.

Genetic counseling

Transmission appears to be autosomal dominant.