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xeroderma

[zeer-uh-dur-muh] /ˌzɪər əˈdɜr mə/
noun, Pathology
1.
a disease in which the skin becomes dry, hard, and scaly.
Origin
1840-1850
1840-50; xero- + -derma
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for xeroderma

xeroderma

/ˌzɪərəʊˈdɜːmə/
noun (pathol)
1.
any abnormal dryness of the skin as the result of diminished secretions from the sweat or sebaceous glands
2.
another name for ichthyosis
Derived Forms
xerodermatic (ˌzɪərəʊdəˈmætɪk), xerodermatous, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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xeroderma in Medicine

xeroderma xe·ro·der·ma (zēr'ō-dûr'mə) or xe·ro·der·mi·a (-mē-ə)
n.
Excessive or abnormal dryness of the skin, as in ichthyosis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for xeroderma

ichthyosis

a hereditary condition involving dryness and scaliness of the skin brought about by excessive growth of the horny outermost covering of the skin. The dead cells of this horny layer do not slough off at the normal rate but tend instead to adhere to the skin surface to form scales; horny plaques and papules may also be present in more severe cases. The skin in this condition is intolerant of even the mildest irritants and is prone to severe chapping and fissuring in cold weather. Ichthyosis is usually not detected at birth, but, as the child grows older, dry branny scaling will appear, being most marked on the extensor surfaces of the extremities. Ichthyosis may sometimes be associated with a deficiency of the sweat glands and, less frequently, with irregularities in the growth of hair, teeth, and nails. In its mild and simplest form, ichthyosis is probably the most common of the hereditary skin disturbances.

Learn more about ichthyosis with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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