Lichen planus

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Tests and diagnosis

By Mayo Clinic staff

Your doctor may ask about your symptoms and medical history, examine your skin, and order tests. A punch biopsy test may be necessary to confirm the diagnosis or to rule out another cause. During a punch biopsy test, the doctor uses a circular tool to remove a small section of your skin's deeper layers. A punch biopsy extends about 1/4 inch (6 millimeters) deep. You'll likely receive stitches to close the wound. The skin sample is examined under a microscope to confirm a diagnosis of lichen planus.

DS00782

Aug. 15, 2008

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