Harlequin-type ichthyosis is a genetic disorder which results in thickened skin over nearly the entire body at birth. The skin forms large, diamond-shaped plates that are separated by deep cracks. They affect the shape of the eyelids, nose, mouth, and ears, and limit movement of the arms and legs.Causes: Genetic (autosomal recessive).
Ichthyosis is a family of rare genetic skin disorders characterized by dry, thickened, scaly skin.. The more than 20 types of ichthyosis range in severity of symptoms, outward appearance, underlying genetic cause, and mode of inheritance (e.g., whether the abnormal gene inherited is dominant, recessive, autosomal or X-linked). Ichthyosis comes from the Greek ἰχθύς, ichthys, literally Specialty: Dermatology.
If acquired ichthyosis vulgaris is suspected, the doctor will likely attempt to determine the underlying medical condition or the medication that triggered its development. The prognosis for an adult with acquired ichthyosis vulgaris depends upon treating the underlying medical condition or discontinuing the triggering medication. Trusted Links.
In autosomal recessive congenital ichthyosis (1:3–500,000) one abnormal gene is inherited from each parent. Keratinopathic ichthyoses (1:200,000) have recessive and dominant forms and present at birth with a collodion membrane. Ichthyosis can also be due to a new spontaneous mutation. Acquired ichthyosis. Acquired ichthyosis appears in adult.