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Lichen planus - close-up
Lichen planus - close-up


Psoriasis, magnified x4
Psoriasis, magnified x4


Athlete's foot, tinea pedis
Athlete's foot, tinea pedis


Lichen planus on the arm
Lichen planus on the arm


Lichen planus on the hands
Lichen planus on the hands


Scales

Definition:

Scales are a visible peeling or flaking of outer skin layers.



Alternative Names:

Skin flaking



Common Causes: Scales may be caused by dry skin, certain inflammatory skin conditions, or infections.

References:

High WA, Tomasini CF, Argenziano G, Zalaudek I. Basic principles of dermatology. In: Bolognia JL, Jorizzo JL, Schaffer JV, eds. Dermatology. 3rd ed. Philadelphia, Pa.: Elsevier Saunders; 2012:chap 1.




Review Date: 4/14/2013
Reviewed By: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, Bethanne Black, Stephanie Slon, and Nissi Wang.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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