Image of the Week – Ichthyosis Vulgaris

12-year old with ichthyosis vulgaris

Ichthyosis is characterized by rough, scaly skin.

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 ichthys, literally “fish”, since dry, scaly skin is the defining feature of all forms of ichthyosis. The severity of symptoms can vary enormously, from the mildest, most common, types such as ichthyosis vulgaris, which may be mistaken for normal dry skin, up to life-threatening conditions such as harlequin-type ichthyosis. Ichthyosis vulgaris accounts for more than 95% of cases. See: https://en.wikipedia.org/wiki/Ichthyosis and https://en.wikipedia.org/wiki/Ichthyosis_vulgaris for more information.