mole changes at night

Overview

A mole is a small, coloured spot on the skin made of cells that contain pigment. You may notice a mole when you look at your skin before going to bed, so it can feel as if the mole is changing at night. In fact, moles do not behave differently at night. What matters is whether a mole has truly changed over time. Any change in size, shape, colour, or texture should be checked by a doctor to rule out problems.

Many people notice mole changes and worry about them. Most moles are harmless, and some change is normal. However, a small number of changing moles can be an early sign of skin cancer, so it is always wise to have changes checked.

Anyone can develop moles or mole changes. Changes are more noticeable in adults, people with fair skin, people who have had sunburns, and those with a family history of skin cancer. Children's moles often grow with them, and older adults may develop new spots as their skin ages.

Symptoms

Common symptoms

• A mole that becomes larger or thicker
• A mole that changes colour or has uneven colours
• A mole that develops a new irregular border
• A mole that bleeds, itches, or becomes painful
• A mole that looks completely different from your other moles

Symptoms in children

• Moles in children often grow at the same rate as the child, so gentle change may be normal.
• A new mole in a child is common up to the late teens.
• A mole that bleeds, grows very quickly, or changes colour in an unusual way should be checked by a doctor.

Symptoms in older adults

• Older adults may develop new moles or age spots, even after age 50.
• Existing moles can fade over time.
• Any new or changing pigmented spot in an older adult should be reviewed by a doctor, because the risk of skin cancer rises with age.

Causes

Main causes

• Normal growth and aging of the skin
• Hormone changes, such as during puberty, pregnancy, or the menopause
• Sun exposure and ultraviolet (UV) damage, which can cause new moles to appear or existing moles to change
• Rarely, changes caused by skin cancer, which may affect the shape, colour, or borders of a mole

Risk factors

• Very fair skin, light eyes, or red or blonde hair
• Having many moles, or having unusual-looking moles
• A history of sunburns, especially in childhood
• Use of sunbeds or tanning lamps
• A personal or family history of skin cancer
• Weakened immune system

When to see a doctor

See a doctor urgently if:

• A mole that has changed in size, shape, or colour within a few weeks
• A mole that bleeds, itches, crusts, or will not heal
• A new mole that stands out from your other moles
• A mole that has grown back after being removed before

Book a routine appointment if:

• Any new mole, especially if you have many moles or a family history of skin cancer
• A slow change in a mole over months that is still worth checking
• A mole you are not sure about and would like a professional to look at

Diagnosis

A doctor will ask you about your mole, how long it has been changing, and whether you have any risk factors. They will examine your skin by eye and often with a dermatoscope, a handheld magnifier that helps the doctor see structures in the skin.

Tests that may be done

• A full skin exam, looking at all of your skin, not just the mole you noticed
• Dermatoscopy, a painless close-up check that helps doctors tell moles from other skin spots
• Biopsy, when a doctor removes a small piece or the whole mole so it can be looked at under a microscope

What to expect at your appointment

A skin check usually takes about 10 minutes. You may be asked to remove most of your clothes and wear a paper gown so the doctor can check your skin properly. If a mole is removed, the area is numbed with local anaesthetic, so the procedure should not hurt. You may have a small bandage and a few stitches. Results can take one to three weeks.

Treatment

The right treatment depends on what the mole is found to be. If a mole is harmless, you do not need treatment. If it is suspicious, doctors usually remove it completely and send it for testing. Your healthcare team will explain the results and recommend the next steps, if any.

Self-care at home

• Keep a monthly record of your skin, including photos, so you can notice real changes early
• Protect moles from sun exposure by staying in shade and covering up
• Check your skin in bright light, and use a mirror for your back, scalp, and legs
• Follow aftercare advice if you have had a mole removed

Medical treatments

A suspicious mole is usually removed surgically. If a biopsy shows cancer, a specialist will discuss further treatment. This may include a wider removal, more monitoring, or other treatments decided by a skin cancer team. The plan is always personal to you.

When is surgery considered?

Removal is used when a mole is suspicious, causing symptoms, or cannot be checked safely without taking it away. The procedure is usually done in a clinic or day surgery under local anaesthetic. Most people heal well and have a small scar.

Living with this condition

Moles are part of the body and do not require daily attention. Get to know your skin and what is normal for you. That way, you can spot a meaningful change and see a doctor at the right time.

Lifestyle tips

• Check your skin once a month, not every day, to avoid unnecessary worry
• Take photos of moles with your phone to track any changes
• Wear sun-protective clothing, a hat, and broad-spectrum sunscreen during sunny days
• Avoid sunbeds and tanning lamps

Diet and exercise

No food or exercise plan can change a mole. A balanced diet and regular activity help keep your body healthy overall and make it easier to recover if you ever need treatment.

Mental health and emotional wellbeing

Worrying about a mole can be stressful and may affect your sleep, especially if you inspect your skin at night. Try to keep checking to once a month and talk to your doctor about any fears. If worry becomes overwhelming or you feel in crisis, please reach out to a local crisis helpline or your emergency services.

Prevention

You cannot prevent all moles, but you can lower the risk of harmful changes by protecting your skin from UV radiation and knowing your skin. The most dangerous changes are often linked to sun damage, so sun safety matters.

Vaccines

There is no vaccine for preventing mole changes or skin cancer.

Screening programmes

Monthly self-checks are a simple form of screening. Some people at higher risk may be offered regular skin checks by a specialist. Ask your healthcare provider whether this is right for you.

Complications

If left untreated

• A concerning mole that is not checked could grow deeper into the skin over time.
• If skin cancer is present and left untreated, it could spread to other parts of the body.
• Delaying a biopsy means losing the chance to catch an early-stage problem.

Long-term outlook

The vast majority of moles are harmless and never require treatment. When a worrying mole is found early, the outlook is very good. Even if a mole needs removal, most people recover fully. The key is to get changes checked and not to panic.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.