ichthyosis /ich·thy·o·sis/ (-sis) any in a group of cutaneous disorders characterized by increased or aberrant keratinization, resulting in noninflammatory scaling of the skin; most are genetically determined; often used to denote i. vulgaris. ichthyot´ic
ichthyosis vulgaris
ichthyosis hys´trix a rare form of epidermolytic hyperkeratosis, marked by generalized, dark brown, linear verrucoid ridges somewhat like porcupine skin.
lamellar ichthyosis a hereditary disease present at or soon after birth, with large, quadrilateral, grayish brown scales; it may be associated with short stature, oligophrenia, spastic paralysis, genital hypoplasia, hypotrichia, and shortened life-span.
ichthyosis sim´plex i. vulgaris.
ichthyosis u´teri transformation of the columnar epithelium of the endometrium into stratified squamous epithelium.
ichthyosis vulga´ris hereditary ichthyosis present at or shortly after birth, with large, thick, dry scales on the neck, ears, scalp, face, and flexural surfaces.
ichthyosis vul·gar·is (v l-gâr  s)n. An inherited condition appearing in childhood and characterized by fine scales on the trunk and extremities. Also called ichthyosis simplex. |
ichthyosis vulgaris
Etymology: Gk, ichthys + osis + L, vulgaris, common
a hereditary skin disorder characterized by large, dry, dark scales that cover the face, neck, scalp, ears, back, and extensor surfaces but not the flexor surfaces of the body. The condition is transmitted as an autosomal-dominant trait; it appears several months to 1 year after birth. Management consists of topical application of emollients and use of keratolytic agents to facilitate removal of the scales. Also called ichthyosis simplex. See also sex-linked ichthyosis.
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