Dermoscopy explained

Overview

Dermoscopy is a painless skin examination that uses a special magnifying tool called a dermatoscope. It helps doctors see details beneath the skin's surface, making it easier to check moles, spots, and other skin changes. It is often used to look for early signs of skin cancer, but it can also help with other skin conditions.

Yes, dermoscopy is a standard part of a skin check, especially if you have many moles or a history of sunburn. Your doctor or a dermatologist (skin specialist) may use it during a routine appointment.

Dermoscopy is used for anyone with skin concerns – children, adults, and older people. It is especially helpful for people with fair skin, many moles, or a family history of skin cancer.

Symptoms

Common symptoms

• Dermoscopy itself does not cause symptoms – it is a test. But it is used to check symptoms like a new or changing mole, a spot that itches or bleeds, or a patch of skin that looks different from the rest.

Symptoms in children

• In children, dermoscopy may be used to check birthmarks or unusual spots. It is safe and painless.

Symptoms in older adults

• In older adults, dermoscopy is useful for checking spots that have been present for many years or new growths that appear. Age-related skin changes can sometimes hide early signs of skin cancer.

Causes

Main causes

• Dermoscopy is not a cause – it is a test. But the reasons you might need one include: checking for skin cancer (especially melanoma), looking at other skin conditions like psoriasis or eczema, or monitoring a mole that looks unusual.

Risk factors

• You may be more likely to need dermoscopy if you have: fair skin that burns easily, a history of sunburns or tanning bed use, many moles (more than 50), a family or personal history of skin cancer, or a weakened immune system.

When to see a doctor

See a doctor urgently if:

• If you notice a mole or spot that is changing quickly – for example, growing, changing colour, or bleeding.
• If you have a sore that has not healed after 4 weeks.

Book a routine appointment if:

• It is a good idea to have a full skin check with dermoscopy once a year if you have risk factors for skin cancer, or as often as your doctor suggests.
• You can also ask for a dermoscopy check if you are worried about any spot on your skin.

Diagnosis

Dermoscopy is used to help diagnose skin conditions. The doctor looks at your skin through a dermatoscope – a handheld magnifier with a light. Sometimes they put a drop of liquid (like gel) on your skin to see better. They can take photos for comparison next time.

Tests that may be done

• If the dermoscopy shows something suspicious, your doctor may suggest a biopsy – removing a small piece of skin or the whole spot to check under a microscope.
• You may also have a full-body skin check where the doctor examines all your skin from head to toe.

What to expect at your appointment

Dermoscopy is painless and quick. You will undress to your underwear (a gown is provided) so the doctor can see your whole skin. The doctor will examine each area with the dermatoscope. They may mark spots for monitoring. The appointment usually takes 10 to 20 minutes.

Treatment

Dermoscopy itself does not treat anything. Treatment depends on what the doctor finds. If a suspicious spot is detected, your doctor will explain the next steps.

Self-care at home

• Protect your skin from the sun with sunscreen, hats, and clothing.
• Check your own skin regularly for new or changing spots.

Medical treatments

If a skin cancer or precancerous lesion is found, treatments may include creams, freezing, or minor surgery. Your doctor will discuss which option is best for you. Never self-treat a suspicious spot.

When is surgery considered?

If a spot is diagnosed as skin cancer, surgical removal is often the main treatment. A small procedure can remove the cancer and a tiny border of healthy skin to make sure it is all gone.

Living with this condition

Having a dermoscopy check can give you peace of mind. After the test, you can go back to your normal activities right away. If you have a spot that is being monitored, you may need follow-up checks.

Lifestyle tips

• Wear sunscreen every day, even when it is cloudy.
• Avoid sunbeds and sunbathing.
• Wear protective clothing like a wide-brimmed hat and UV-blocking sunglasses.

Diet and exercise

Eating a balanced diet rich in fruits and vegetables and staying active supports your overall health, but there is no specific diet that prevents skin cancer. A healthy lifestyle helps your immune system work well.

Mental health and emotional wellbeing

Worrying about skin cancer can be stressful. It is normal to feel anxious during a skin check. If you are diagnosed with skin cancer, you may feel scared or upset. Talk to your doctor or a counsellor – you are not alone.

Prevention

You cannot always prevent skin cancer, but you can lower your risk. The most important steps are protecting your skin from too much sun and avoiding sunbeds. Also, check your skin regularly and see a doctor if you notice any changes.

Screening programmes

There is no national screening programme for skin cancer in the UK for everyone, but people at high risk (for example, those with many moles or a family history) may be offered regular skin checks. Ask your doctor if you think you should be screened.

Complications

If left untreated

• If a suspicious spot seen under dermoscopy is ignored and turns out to be skin cancer, it could grow deeper and spread to other parts of the body, making treatment harder.

Long-term outlook

Most skin cancers found early are curable. Dermoscopy helps catch problems at an early stage when treatment is often simple and very successful. Regular checks and sun protection give you the best chance of staying healthy.

Find support

Local organisations

• NHS – Skin cancer ↗ · United Kingdom

Helplines

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