mole changes when to seek care

Overview

A mole is a small spot on your skin. It is usually brown, black, or pink. Moles are made of cells that make colour. Most moles are harmless. Sometimes a mole changes, and that can worry people. This article explains which changes matter and when to get help.

Yes. Having moles is very common. Most adults have 10 to 40 moles. Moles that change are also common, and 9 out of 10 changing moles are not cancer.

Anyone can have moles. They often appear during childhood and the teenage years. You are more at risk of new moles if you have fair skin or spend time in the sun. Older adults may see new moles too, so every adult should check their skin.

Symptoms

Common symptoms

• A mole that changes size, shape, or colour
• A mole with an irregular or blurry border
• A mole that has more than one colour or becomes darker
• A mole larger than 6 millimetres (about the size of a pencil eraser)
• A mole that itches, bleeds, crusts, or scabs without injury
• A new mole that looks very different from your other moles

Causes

Main causes

• Moles form when pigment cells grow in a cluster instead of spreading evenly.
• Mole changes can be caused by sun exposure, hormonal changes like pregnancy or puberty, and natural ageing.
• Sometimes, a mole change is due to melanoma, a type of skin cancer that starts in pigment cells.

Risk factors

• Fair skin, red or blonde hair, or blue eyes
• A history of sunburns, especially during childhood
• Many moles – more than 50
• A family member with melanoma
• A weakened immune system
• Using tanning beds

When to see a doctor

See a doctor urgently if:

• See a doctor within a few days if you notice any change in a mole.
• Do not wait for a mole to become painful or bleed – early changes matter.
• Make an appointment sooner if you have many moles or a strong family history of skin cancer.

Diagnosis

A doctor or skin specialist will look at the mole closely. They may use a special magnifying glass with a light called a dermatoscope. They will also ask about your medical history and sun exposure.

Tests that may be done

• The main test is a skin biopsy. The doctor numbs the skin, removes the entire mole or a small part of it, and sends it to a lab.
• The lab checks the cells under a microscope to see if they are cancerous.

What to expect at your appointment

A skin check is quick and painless. A biopsy is a small minor procedure done in the doctor's office. You may have a small stitch or plaster. Results usually come back in 1 to 3 weeks. You will discuss the results with your doctor.

Treatment

Treatment depends on what the mole is. Harmless moles usually need no treatment. If you do not like how a mole looks or it rubs against clothing, you can ask to have it removed. If the mole is cancer, the usual treatment is surgery to remove it.

Self-care at home

• Do not try to remove a mole with scissors, cream, or any home method.
• This can cause infection or hide the problem. The best self-care is to watch your moles, take photos, and wear sun protection.

Medical treatments

If a mole is precancerous or melanoma, doctors will recommend surgery to remove it with a small border of normal skin. For more advanced melanoma, additional treatments such as immunotherapy or targeted therapies may be suggested by your cancer specialist. The specific plan is always personalised.

When is surgery considered?

Surgery for a suspicious mole is usually done under local anaesthetic. You are awake, but the area is numb. The doctor removes the mole and a small margin of skin, then sends it to the lab. In most cases you can go home the same day.

Living with this condition

A mole check should become a habit. Look at your whole body once a month in front of a mirror. Use a photo of each mole with a ruler for reference. If anything changes, contact your doctor quickly.

Lifestyle tips

• Wear sunscreen every day, even when it is cloudy
• Cover up with a hat and long sleeves if you are out in strong sun
• Stay in the shade between 11am and 3pm
• Never use tanning beds or sun lamps

Diet and exercise

Eating a balanced diet with plenty of fruits and vegetables helps your skin stay healthy. Regular exercise boosts your immune system. There is no single food that prevents skin cancer, but a healthy lifestyle is always a good idea.

Mental health and emotional wellbeing

It is normal to feel anxious about a mole. Worrying about skin cancer can affect your sleep and mood. If you feel anxious, talk to family or a friend. You can also tell your doctor – support is available.

Prevention

You cannot always prevent moles – they appear naturally. But you can lower your chance of melanoma by limiting UV exposure. Wear broad-spectrum sunscreen with SPF 30 or higher, and avoid burning. Regular skin checks help you catch any changes early.

Screening programmes

Whole-body skin screening may be recommended for people at high risk. Your doctor can tell you if you need annual skin exams. You can also do a simple skin self-check every month.

Complications

If left untreated

• If a melanoma is not removed early, it can grow deeper into the skin and spread to lymph nodes or other organs.
• This is why it is important not to ignore a changing mole.

Long-term outlook

The outlook is very good when mole changes are found early. Most changing moles are not cancer. Even when melanoma is present, early treatment cures it in most people. Checking your skin regularly gives you peace of mind and better health.

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