NORD gratefully acknowledges members of the Medical Advisory Board of the Foundation for Ichthyosis & Related Skin Types, for assistance in the preparation of this report.
In ichthyosis vulgaris, the skin cells are produced at a normal rate, but they do not shed normally at the surface of the outermost layer of skin (stratum corneum) and are not shed as quickly as they should be. The result is a build-up of scale. Fine scales usually develop on the back and over muscles near the joints, such as an elbow or knee (extensor muscles). Ichthyosis is usually most common and severe over the lower legs.
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