Excess dead skin cells that are produced because of abnormal skin conditions.
Skin scales can be very thin or fine (as with pityriasis rosea) or thick (as with psoriasis).
By Heather Brannon, MD, About.com
Updated: December 27, 2007
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
Excess dead skin cells that are produced because of abnormal skin conditions.
Skin scales can be very thin or fine (as with pityriasis rosea) or thick (as with psoriasis).
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