Ichthyosis vulgaris (IV) is one of a heterogeneous group of disorders of skin cornification or keratinization (the process in which skin cells are produced and eventually shed). It is typified by a specific pattern of scaling of the skin and a unique form of inheritance.
A condition characterized by dry, rectangular scales on the skin that is most pronounced on the legs. Ichthyosis vulgaris is the result of a hereditary skin defect that causes excessive accumulation of scales on the skin. Symptoms vary in severity. Mild cases cause primarily cosmetic problems. More serious ichthyosis leads to painful, bleeding cracks in the skin that can become infected if left untreated.
A hereditary form of ichthyosis that includes two genetically distinct types. Dominant ichthyosis vulgaris is produced by an autosomal dominant gene. Characterized by dry, rough, scaly skin, it is not present at birth and is usually noticed between the ages of one and four. Many cases improve in later life.