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What Is Melanoma and Why Early Detection Matters

Melanoma is a serious type of skin cancer. It starts in cells called melanocytes. These cells make melanin, which gives skin its colour. Melanoma is less common than some other skin cancers, but it can be more dangerous. This is because it can spread to other parts of the body if it is not found and treated early.

Melanoma can appear anywhere on the body. It is more common in areas that get ultraviolet, UV, light. These include the face, neck, arms, legs, chest, and back.

It can also appear in places that are harder to see. These include the soles of the feet, the palms of the hands, the area under the nails, the inside of the mouth, the genital area, and, rarely, the eye.

The first sign of melanoma is often a new mole or a change in an old mole, freckle, or patch of skin. A mole may be a concern if it changes in size, shape, or colour. It may also become itchy or sore, bleed, crust, or look different from other marks on your skin.

Most melanomas are linked to damage from UV rays. UV rays mainly come from sunlight and sunbeds. The risk may be higher if you have fair skin that burns easily, many moles or freckles, a history of sunburn, red or blonde hair, or a close family member with melanoma.

Melanoma is usually easier to treat when it is found early. Check your skin regularly. Speak to a doctor if you notice a new, changing, unusual, bleeding, or itchy mole.

Here’s the easier version:

Melanoma Symptoms

Melanoma can be hard to spot early because it may not hurt or feel uncomfortable.

The most common warning sign is a new mole, mark, or patch on the skin. It can also be a change in a mole you already have.

Melanoma can appear anywhere on the body. It can even appear in places that do not get much sun, such as the soles of the feet, palms of the hands, under the nails, inside the mouth, around the genitals, or in the eye.

Common Warning Signs Of Melanoma

Warning Sign	What To Look For
Asymmetry	One half of the mole or mark looks different from the other half.
Border changes	The edges look uneven, blurred, jagged, or irregular.
Colour changes	The mole has more than one colour, such as brown, black, red, pink, grey, blue, or white.
Diameter increase	The mole is growing or is larger than 6 mm, although melanomas can be smaller.
Evolving appearance	The mole changes in size, shape, colour, height, or texture over time.
Itching or soreness	A mole or skin patch becomes itchy, painful, tender, or irritated.
Bleeding or crusting	A mole starts to bleed, ooze, crust, or does not heal properly.
The ugly duckling sign	A mole or mark looks very different from the others on your skin.

Changes In Moles

A changing mole should always be checked. Melanoma can start in a mole you already have. It can also appear as a new mark on normal skin.

Adults should pay attention to new moles, especially if they appear suddenly or keep changing. A mole may be a concern if it becomes larger, darker, uneven, raised, swollen, itchy, painful, or starts to bleed. Any mole that looks different from your other moles should be checked by a doctor.

Melanoma in Less Obvious Areas

Melanoma does not only appear on skin that is exposed to the sun. It can also appear in places that are harder to check.

Area	Possible Sign
Under a nail	A dark streak, a changing mark, or a nail colour change.
Soles or palms	A new or changing brown, black, or unusual patch.
Mouth or genital area	A dark patch, sore, or changing mark.
Eye	Vision changes, a dark spot, or eye discomfort, although eye melanoma may not cause symptoms early.

When To Speak To A Doctor

Speak to a doctor quickly if you notice a new, changing, unusual, itchy, bleeding, crusting, or painful mole or skin mark.

You should also get advice if a mole looks different from the others on your body or if a sore does not heal.

Early checks are important because melanoma is usually easier to treat when found early.

Early Warning Signs and Symptoms of Melanoma

Melanoma can be hard to spot early because it may not hurt or feel uncomfortable.

The most common warning sign is a new mole, mark, or patch on the skin. It can also be a change in a mole you already have.

Common Warning Signs Of Melanoma

Warning Sign	What To Look For
Asymmetry	One half of the mole or mark looks different from the other half.
Border changes	The edges look uneven, blurred, jagged, or irregular.
Colour changes	The mole has more than one colour, such as brown, black, red, pink, grey, blue, or white.
Diameter increase	The mole is growing or is larger than 6 mm, although melanomas can be smaller.
Evolving appearance	The mole changes in size, shape, colour, height, or texture over time.
Itching or soreness	A mole or skin patch becomes itchy, painful, tender, or irritated.
Bleeding or crusting	A mole starts to bleed, ooze, crust, or does not heal properly.
The ugly duckling sign	A mole or mark looks very different from the others on your skin.

Changes In Moles

A changing mole should always be checked. Melanoma can start in a mole you already have. It can also appear as a new mark on normal skin.

Melanoma in Less Obvious Areas

Melanoma does not only appear on skin that is exposed to the sun. It can also appear in places that are harder to check.

Area	Possible Sign
Under a nail	A dark streak, a changing mark, or a nail colour change.
Soles or palms	A new or changing brown, black, or unusual patch.
Mouth or genital area	A dark patch, sore, or changing mark.
Eye	Vision changes, a dark spot, or eye discomfort, although eye melanoma may not cause symptoms early.

When To Speak To A Doctor

Speak to a doctor quickly if you notice a new, changing, unusual, itchy, bleeding, crusting, or painful mole or skin mark.

You should also get advice if a mole looks different from the others on your body or if a sore does not heal.

Early checks are important because melanoma is usually easier to treat when found early.

Melanoma Stages and Disease Progression

Melanoma stages explain how deep the cancer has grown and whether it has spread.

Staging helps doctors understand how serious the melanoma is. It also helps them choose the best treatment and follow-up plan.

Melanoma is usually staged from stage 0 to stage 4. Early stages are usually only in the skin. Later stages may involve nearby lymph nodes or other parts of the body.

Melanoma Stages Explained

Stage	What It Means
Stage 0, melanoma in situ	The melanoma is only in the top layer of the skin and has not grown deeper.
Stage 1	The melanoma is thin and has not spread to lymph nodes or other parts of the body.
Stage 2	The melanoma is thicker or has higher-risk features, but it has not spread to lymph nodes or distant organs.
Stage 3	The melanoma has spread to nearby lymph nodes, nearby skin, or lymph channels close to the original tumour.
Stage 4	The melanoma has spread to distant parts of the body, such as distant lymph nodes, lungs, liver, brain, bones, or other organs.

What Doctors Look At When Staging Melanoma

Doctors look at several things when staging melanoma.

Staging Factor	Why It Matters
Tumour thickness	Thicker melanomas have a higher risk of spreading.
Ulceration	This means the skin over the melanoma has broken. It may be at a higher risk.
Lymph node involvement	Shows whether melanoma has spread nearby.
Spread to nearby skin or lymph channels	May mean stage 3 melanoma.
Distant spread	Means stage 4 melanoma.
Test results and scans	Help show whether melanoma has spread.

Why Early Detection Matters

Melanoma is usually easier to treat when it is found early, before it grows deeply or spreads. Stage 0 and early-stage melanoma may often be treated with surgery to remove the affected area. More advanced melanoma may need extra treatment and specialist cancer care. This is why it is important to check your skin regularly and get medical advice for suspicious changes.

When To Get A Mole Checked

Do not wait to see if a suspicious mole gets better on its own. Get medical advice if a mole is new, changing, uneven, bleeding, itchy, painful, crusting, or looks different from your other moles. Early checks can help find melanoma sooner and improve treatment options.

Risk Factors and Causes of Melanoma

Melanoma happens when the cells that give skin its colour, called melanocytes, become damaged and start growing out of control.

The biggest preventable cause of melanoma is too much exposure to ultraviolet, UV, radiation. UV rays come mainly from the sun, but they can also come from sunbeds and tanning lamps.

Common Causes And Risk Factors For Melanoma

Cause Or Risk Factor	How It Increases Risk
UV exposure from the sun	UV rays can damage skin cells and increase the risk of melanoma.
Sunbeds or tanning lamps	Artificial UV rays can increase melanoma risk.
Repeated sunburn	Severe or repeated sunburn increases the risk of melanoma.
Fair skin that burns easily	Fair skin has less natural protection from UV damage.
Red or blonde hair and light-coloured eyes	These features are linked to greater sensitivity to the sun.
Many moles or unusual moles	Having lots of moles, or large or unusual moles, can increase risk.
Family history of melanoma	Having a close relative with melanoma increases risk.
Previous skin cancer	Having skin cancer before makes future skin cancers more likely.
Weakened immune system	The body may find it harder to control damaged cells.
High UV environments	Frequent sun exposure can increase UV damage over time.

UV Radiation

UV radiation is the most important environmental cause of melanoma.

UV rays can damage the DNA inside skin cells. This damage can build up over time, even if you do not burn every time you are in the sun.

However, getting sunburnt, especially more than once, increases the risk of melanoma.

Too much sun exposure during childhood can also increase the risk later in life.

Using sunscreen, covering up, staying in the shade, and avoiding sunbeds can help protect your skin.

Skin Type And Moles

People with fair skin, freckles, red or blonde hair, or light-coloured eyes are more likely to burn in the sun.

This can increase the risk of melanoma.

Having lots of moles or unusual moles can also increase the risk, especially if a mole is large, uneven, or changing.

People with darker skin can also develop melanoma. In these cases, melanoma may appear in places that get less sun, such as the palms of the hands, soles of the feet, or under the nails.

Family History And Immune System Risk

Melanoma can sometimes run in families.

Your risk may be higher if a close relative has had melanoma, especially if more than one family member has been affected.

A weakened immune system can also increase the risk of melanoma and other skin cancers.

Why Knowing Your Risk Matters

Knowing your risk factors can help you take steps to protect your skin.

Anyone can get melanoma, but people at higher risk should be extra careful in the sun, avoid sunbeds, and check their skin regularly.

Speak to a doctor if you notice a new mole or a mole that changes in size, shape, or colour.

Medical Treatment Options for Melanoma

Treatment for melanoma depends on how advanced the cancer is, how deep it has grown, whether it has spread, and your overall health.

Melanoma found early can often be treated successfully with surgery. More advanced melanoma may need other treatments.

Main Treatment Options For Melanoma

Treatment	What It Involves	When It May Be Used
Surgery	Removes the melanoma and a small area of healthy skin around it.	Most early-stage melanomas.
Sentinel lymph node biopsy	Checks if melanoma has spread to nearby lymph nodes.	Some higher-risk melanomas.
Lymph node surgery	Removes lymph nodes that contain cancer cells.	Some stage 3 melanomas.
Immunotherapy	Helps the immune system find and attack cancer cells.	Some stage 3 or stage 4 melanomas.
Targeted therapy	Uses medicines that target specific changes in cancer cells.	Melanomas with certain gene changes.
Radiotherapy	Uses radiation to destroy cancer cells.	Some advanced cases or symptom control.
Clinical trials	Gives access to new treatments being studied.	Some advanced or higher-risk cases.

Surgery For Melanoma

Surgery is the main treatment for melanoma. The melanoma is removed along with a small border of healthy skin around it. This helps lower the chance of cancer cells being left behind. If melanoma is found early, surgery is often very successful.

Lymph Node Assessment

If doctors think there is a higher risk that melanoma has spread, they may check nearby lymph nodes. This may involve a sentinel lymph node biopsy. This test looks for cancer cells in the first lymph node that drains the area around the melanoma. If cancer has spread to the lymph nodes, more treatment may be needed.

Immunotherapy

Immunotherapy helps the body's immune system recognise and attack melanoma cells. It is an important treatment for some advanced melanomas and for some people who have a higher risk of the cancer coming back after surgery. These medicines need careful monitoring because they can cause side effects.

Targeted Therapy

Some melanomas have specific gene changes that help the cancer grow. Targeted therapy uses medicines that block these growth signals. Doctors may test the melanoma to see if targeted therapy is likely to help.

Radiotherapy And Chemotherapy

Radiotherapy uses controlled radiation to destroy cancer cells. It may be used if melanoma has spread or if symptoms need to be controlled. Chemotherapy is used less often today because newer treatments, such as immunotherapy and targeted therapy, are often more effective.

Treatment For Advanced Melanoma

If melanoma has spread to other parts of the body, treatment becomes more complex. Treatment may include immunotherapy, targeted therapy, radiotherapy, surgery in some cases, and other specialist treatments.

Why Timely Treatment Matters

Melanoma is usually easier to treat when it is found early. Do not ignore a mole that is new, changing, bleeding, itchy, painful, or unusual. Getting it checked early can improve treatment options and reduce the risk of the cancer spreading.

How to Prevent Melanoma and Protect Your Skin

Melanoma cannot always be prevented, but there are things you can do to lower your risk.

The best way to reduce your risk is to protect your skin from ultraviolet, UV, rays and check your skin regularly for changes.

UV rays from the sun and sunbeds can damage skin cells. Over time, this damage can increase the risk of melanoma and other skin cancers.

Ways To Help Prevent Melanoma

Prevention Step	What To Do	Why It Helps
Avoid strong sunlight	Stay in the shade when the sun is strongest, especially around midday.	Reduces UV exposure and lowers the risk of sunburn.
Wear protective clothing	Wear long sleeves, a wide-brimmed hat, and protective clothing when possible.	Helps block UV rays from reaching the skin.
Use sunscreen correctly	Apply broad-spectrum SPF 30 or higher sunscreen to exposed skin.	Helps protect skin that is not covered by clothing.
Reapply sunscreen	Reapply every 2 hours and after swimming, sweating, or drying with a towel.	Keeps your skin protected.
Avoid sunbeds	Do not use tanning beds or sunlamps.	Artificial UV rays increase the risk of skin cancer.
Check your skin regularly	Look for new, changing, itchy, bleeding, or unusual moles.	Can help spot melanoma early.
Protect children's skin	Keep children covered, shaded, and protected from sunburn.	Sun damage in childhood can increase melanoma risk later in life.
Know your risk	Take extra care if you have fair skin, lots of moles, or a family history of melanoma.	Higher-risk people may need more regular skin checks.

Protect Your Skin From UV Rays

Protecting your skin from UV rays is one of the best ways to lower your risk of melanoma.

Try to stay in the shade when the sun is strongest. Wear protective clothing whenever possible.

Sunscreen is important, but it should not be used as a reason to stay in the sun for longer.

Choose a broad-spectrum sunscreen with at least SPF 30. Apply it generously to exposed skin and reapply it regularly, especially after swimming, sweating, or exercise.

Avoid Sunbeds

Sunbeds are not a safe way to get a tan. They emit UV radiation that can damage skin cells and increase the risk of melanoma and other skin cancers.

A tan is not a sign of healthy skin. It is a sign that the skin has been damaged by UV rays.

Check Your Skin Regularly

Checking your skin can help you spot warning signs of melanoma early. Look at your whole body, including areas that are easy to miss, such as the scalp, back, soles of the feet, between the toes, under the nails, and behind the ears.

You can use the ABCDE rule to check moles:

ABCDE Sign	What To Look For
A, Asymmetry	One half of the mole looks different from the other half.
B, Border	The edges are uneven, blurred, or irregular.
C, Colour	The mole has different colours or uneven colouring.
D, Diameter	The mole is larger than 6 mm, although melanomas can be smaller.
E, Evolving	The mole changes in size, shape, colour, or appearance.

You should also watch for the "ugly duckling" sign. This is when one mole looks very different from all your other moles.

Take Extra Care If You Are Higher Risk

Some people have a higher risk of melanoma.

This includes people with fair skin that burns easily, red or blonde hair, light-coloured eyes, many moles, unusual moles, a family history of melanoma, a previous skin cancer, or a weakened immune system.

If you are at higher risk, regular skin checks are especially important.

Protect Children From Sunburn

Children's skin is very sensitive to UV damage. Protecting their skin from the sun can help lower their risk of skin cancer later in life. Keep children in the shade during strong sunlight. Dress them in protective clothing, have them wear hats and sunglasses, and apply sunscreen to exposed skin.

When Prevention Is Not Enough

Even if you protect your skin well, melanoma can still happen. Speak to a doctor if you notice a new mole, a mole that changes, a mole that bleeds or itches, or a mark that looks different from the others on your skin. Melanoma is usually easier to treat when it is found early.

How Mobi Doctor Can Help

If you are worried about a mole or a change in your skin, Mobi Doctor can help with an online consultation. A doctor can review your symptoms, discuss your risk factors, and advise whether you need an in-person skin check or specialist assessment.

Melanoma Treatment Online FAQs

Melanoma warning signs often include a mole that changes shape, colour, size, or texture over time. Other concerning features include uneven borders, multiple colours within one mole, itching, bleeding, crusting, or a lesion that looks noticeably different from surrounding moles.

An online doctor can help assess suspicious moles or skin lesions and identify features that may need urgent in-person dermatology review. At Mobi Doctor, licensed EU doctors review mole changes, skin symptoms, medical history, and photographs where appropriate to help guide next steps and urgency.

Melanoma may appear as a dark brown, black, red, pink, or unevenly coloured mole with irregular borders or asymmetrical shape. Some melanomas become raised, bleed, itch, or continue enlarging, while others appear as a new unusual spot that changes over weeks or months.

You should book an online consultation for melanoma if you noticeA mole becomes more concerning when it changes rapidly, develops irregular edges, becomes uneven in colour, grows larger, or starts itching or bleeding. The ABCDE rule is commonly used to identify suspicious moles: asymmetry, border irregularity, colour variation, diameter enlargement, and evolving appearance.new moles, changes in existing moles, irregular shapes, uneven colours, itching, bleeding, or spots that look unusual. Early medical advice online can guide you toward timely treatment options.

Melanoma can develop within an existing mole or appear as a completely new skin lesion. Changes in a long-standing mole, especially new growth, darkening, inflammation, or surface breakdown, should not be ignored because early detection significantly improves treatment outcomes.

Urgent medical assessment is important if a mole bleeds, changes quickly, becomes painful, develops multiple colours, or looks different from other moles on the body. New skin lesions appearing after adulthood or sores that do not heal also need prompt review.

Excessive ultraviolet (UV) exposure from sunlight or tanning beds is one of the main risk factors for melanoma. Repeated sunburn, especially during childhood, fair skin, large numbers of moles, and family history of skin cancer can further increase melanoma risk.

Melanoma can sometimes cause itching, tenderness, crusting, or spontaneous bleeding as abnormal skin cells grow and damage surrounding tissue. A mole that repeatedly bleeds, scabs, or becomes irritated without injury should be medically evaluated as soon as possible.

An online doctor can help assess concerning skin changes and identify symptoms that may require urgent dermatology referral or biopsy. Mobi Doctor doctors may recommend monitoring, specialist assessment, or further investigation depending on the appearance, location, and progression of the lesion.

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