[Dermatoglyphic characteristics in hereditary ichthyosis].

Examination of 530 dermatoglyphic patterns of the palms and fingers in 265 patients with 5 nosologic forms of hereditary ichthyoses (autosomal dominant ichthyosis vulgaris, X-linked, congenital, lamellar, epidermolytic ichthyoses) have revealed significant differences in the pattern intensities and in the incidence rate of certain types of these patterns, associated with this or that form of ichthyosis; abnormalities in the flexor wrinkles of the ridge skin have been observed in all the studied forms of the disease, except the X-linked condition. The studies have revealed an abnormal roughness of the papillae on the epidermal ridges in epidermolytic ichthyosis and an obliterated dermatoglyphic pattern in lamellar ichthyosis. The detected changes in the ridge skin and the dermatoglyphic phenotypes may be useful for the differential diagnosis of these conditions.