CID / ISM / SCIENCE PHOTO LIBRARY CID / ISM / SCIENCE PHOTO LIBRARY
Ichthyosis nigricans. Dry scaly skin on the arm of a young male patient with ichthyosis nigricans. Ichthyosis is a heterogeneous family of at least 28 mostly genetic skin disorders. All types of ichthyosis have dry, thickened, scaly or flaky skin. Treatment often takes the form of topical application of creams and emollient oils, in an attempt to hydrate the skin.
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