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ichthyosis

[ik-thee-oh-sis] /ˌɪk θiˈoʊ sɪs/
noun, Pathology
1.
a hereditary skin disease in which the epidermis continuously flakes off in large scales or plates.
Origin
1805-1815
1805-15; < Neo-Latin; see ichthy(o)-, -osis
Related forms
ichthyotic
[ik-thee-ot-ik] /ˌɪk θiˈɒt ɪk/ (Show IPA),
adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ichthyosis

ichthyosis

/ˌɪkθɪˈəʊsɪs/
noun
1.
a congenital disease in which the skin is coarse, dry, and scaly Also called xeroderma Nontechnical name fishskin disease
Derived Forms
ichthyotic (ˌɪkθɪˈɒtɪk) adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for ichthyosis
n.

1815, Modern Latin, from Greek ikhthys "fish" + -osis.

Online Etymology Dictionary, © 2010 Douglas Harper
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ichthyosis in Medicine

ichthyosis ich·thy·o·sis (ĭk'thē-ō'sĭs)
n.
A congenital, often hereditary skin disease characterized by dry, thickened, scaly skin. Also called alligator skin, fish skin, fishskin disease, ichthyosis sauroderma.

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 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.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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