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September 27, 2026

What to expect from a skin biopsy

If your dermatologist has recommended a skin biopsy, it usually means they want a closer look at a spot, rash or lesion to reach an accurate diagnosis. It is one of the most common procedures in dermatology and is generally quick, safe and done right there in the consulting room.

Why a biopsy might be recommended

A biopsy removes a small sample of skin so it can be examined under a microscope. Your dermatologist might suggest one to confirm whether a lesion is harmless, to diagnose a persistent rash, or to guide the right treatment for a condition that has not responded to first steps. Sending the sample to a pathologist takes the guesswork out of the diagnosis.

The main types

There are a few different approaches, and your dermatologist will choose the one that suits the site and the question they are trying to answer.

  • Shave biopsy. A thin layer is taken from the surface. Best for raised spots that sit above the skin.
  • Punch biopsy. A small circular tool removes a deeper core of skin, often closed with a single stitch.
  • Excisional biopsy. The whole lesion is removed along with a margin of normal skin, then closed with stitches.

On the day

The area is cleaned and numbed with a local anaesthetic, so you may feel a brief sting as it goes in, then little else. The biopsy itself usually takes only a few minutes. You will be able to drive yourself home and return to most normal activities the same day.

Local anaesthetic means you stay fully awake and comfortable. Most people are surprised by how quick and straightforward the procedure is.

Caring for the site afterwards

Keeping the wound clean and covered helps it heal well and reduces scarring. Your dermatologist will give you specific instructions, which usually include keeping the dressing dry for the first day, gentle cleaning, and avoiding heavy exercise or swimming until it has settled. If you notice increasing pain, spreading redness or discharge, contact the clinic.

Getting your results

Pathology results generally take about one to two weeks. Your dermatologist will talk you through what they mean and, if any treatment is needed, plan the next steps with you. A biopsy is often the fastest path to peace of mind, so try not to worry while you wait.

If you have a spot or rash you would like assessed, book a consultation and our team can advise whether a biopsy is the right step.

About the author
Dermatologist - Founder, Skindepth
Dr Alice Rudd is a Melbourne dermatologist specialising in medical, cosmetic, paediatric & vulval care. Founder of Skin Depth Dermatology.
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