Health A-Z

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Diagnosis

Your doctor will look for the typical skin and nail changes of this disorder. He or she can frequently diagnose psoriasis based on your physical examination.

When skin symptoms are not typical of the disorder, your doctor may recommend a skin biopsy. In a biopsy, a small sample of skin is removed and examined in a laboratory. The biopsy can confirm the diagnosis and rule out other possible skin disorders.

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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.

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