10 Things You Didn’t Know About Lichen Planus

9. Diagnosis

The first thing a doctor will do to determine a diagnosis of lichen planus is to examine the skin visually. He or she will look at the shape and formation of lesions, bumps, and erosions. A punch biopsy can also be taken. This involves a taking a small tissue sample from deep layers of the skin using a specific device. It is then observed under a microscope. If this procedure does not correctly identify the cause, a referral to a dermatologist is likely the next step.