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Content author: MD. Piotr Rak, surgeon · Editorial work: Editorial team of Wyspa Medycyny Przyjaznej · Medical review: lek. Piotr Rak · Date of creation: 07.08.2026 · Date of review: 07.08.2026 · Updated: 07.08.2026

The article is of educational nature and does not replace skin examination or dermatoscopic assessment. A lesion that grows, changes shape or color, has uneven borders, itches, bleeds, ulcerates or does not heal requires urgent medical evaluation. The diagnosis of pigmented lesions is not based on photos from the Internet or applications on the phone.

The most important information at a glance

• "Mole" is a colloquial term for a mole. In practice, both words mean the same thing, but they conceal very different changes.
• Pigmented moles arise from clusters of melanocytes, i.e. cells that produce skin pigment.
• Most moles are benign and do not require removal. Their presence alone is not an indication for surgery.
• Congenital moles, present from birth, are assessed differently than acquired moles, appearing during life.
• Not every dark lesion is a birthmark - seborrheic warts, lentigines and hemangiomas look similar.
• Lesions that are not pigmented but are sometimes called moles include soft fibromas and viral warts.
• The basis of the assessment is a dermatoscopic examination - magnification with appropriate lighting allows you to assess a structure invisible to the naked eye.
• The ABCDE rule and the ugly duckling sign are self-observation tools, not a diagnostic method.
• The mole is removed for oncological reasons, when there is reasonable suspicion, or for practical reasons, when it is irritated.
• Each removed mole should be subjected to histopathological examination. Removing moles with a laser without such an examination is not the right thing to do.

Find out more about the specialist

Doctor. Piotr Rak is a surgeon at the Island of Friendly Medicine in Gdańsk. He deals with surgical procedures, including the assessment and removal of skin lesions. In the case of moles, it is crucial to distinguish lesions that require removal from those that just need to be observed - and the principle that each removed pigmented lesion is subjected to histopathological examination.

Schedule a consultation

Birthmark and mole - are they the same?

In everyday conversation, yes. "Mole" is a common name, "nevus" is a term used in medicine. A patient talking about a mole and a doctor talking about a melanocytic nevus most often mean the same lesion.

The difference comes in the level of precision. The word "mole" is sometimes used to refer to any small, raised or darker lesion on the skin - even those that are not moles at all. Patients call it seborrheic warts, soft fibromas, hemangiomas and even viral warts. This is important because each of these changes has a different meaning and different procedures.

A pigmented nevus, in the strict sense, is a cluster of melanocytes - cells that produce melanin, i.e. skin pigment. It may be congenital or acquired, flat or convex, light brown or almost black, smooth or hairy. All these variants are within the norm.

So the practical conclusion is this: the name doesn't matter, what matters is what exactly does the doctor see in the dermatoscope. Therefore, talking about whether something is a "mole or a birthmark" leads nowhere - the real question is whether this lesion requires observation or removal.

What is called a mole?

This list explains why self-assessment can be confusing. Seborrheic warts can look dangerous and frightening, although they are completely benign. Conversely: early melanoma can be inconspicuous, flat and small - and that is why it is often neglected.

The ABCDE rule - a self-observation tool

The ABCDE rule is used to detect changes that require consultation. It is not a diagnostic method - it helps you decide when to see a doctor.

The most important thing is the letter E. Static features can be misleading - many benign moles do not meet ideal criteria for symmetry, and early melanoma may be smaller than 6 mm. This change over time is the strongest warning signal.

It is complementary ugly duckling symptom: in one person, birthmarks are usually similar to each other, like siblings. A change that clearly stands out from the rest - different in color, shape or size - deserves evaluation, even if it doesn't look dramatic in itself. In practice, this criterion is sometimes more sensitive than ABCDE.

When should a mole be removed?

This is a question from the title and requires separating two completely different reasons.

Oncological indications - removal is necessary:

• the lesion raises suspicion during dermatoscopic examination,
• the lesion is evolving: it grows, changes color, shape or borders,
• itching, burning, bleeding or ulceration appears,
• the lesion differs in appearance from other moles patient,
• the lesion is new and appeared in an adult after the age of 40,
• the picture is ambiguous and the decision requires histopathological examination.

Practical indications - removal is possible, but not necessary:

• the mole is constantly irritated: by a belt, shoulder strap, collar, glasses frames,
• the lesion is injured when shaving or combing,
• the mole is aesthetically disturbing and the patient consciously decides to undergo the procedure,
• the location makes self-observation difficult, for example on the back or scalp.

However, it is worth dispelling the fear that prompts some patients to preventively remove everything: irritating the mole itself does not cause melanoma. Trauma can cause the lesion to bleed or catch fire, making assessment difficult - and this is a real reason to remove a mole in the irritated location. But mechanical irritation does not transform a benign lesion into a cancer.

There is no justification for the preventive removal of all moles. Most melanomas arise on previously unaffected skin, not within an existing mole. Removing everything does not remove the risk, but it introduces unnecessary scarring.

What does mole removal look like?

Pigmented moles are removed surgically under local anesthesia. The lesion is removed completely, with a margin of healthy skin, and the wound is closed with stitches. The entire procedure is outpatient and usually takes several to several dozen minutes, depending on the size and location.

The key rule from which there are no exceptions: each removed pigmented lesion is subjected to histopathological examination. This is the only way to get a sure diagnosis. Dermatoscopy allows you to assess the structure of the lesion with high accuracy, but the final decision is provided by a microscope.

This is where the most important warning in this article comes from. Removing pigmented moles with a laser, electrocoagulation or freezing - without collecting material for examination - is not the right treatment. The lesion is evaporated, the material for examination does not exist, and if it was early melanoma, the diagnosis is lost. The patient leaves convinced that the problem has disappeared, although in fact only the possibility of diagnosis has disappeared.

Methods without histopathological examination may be used for non-pigmented lesions of a certain diagnosis, for example soft fibromas - but the decision is always made by the doctor after assessing the lesion, and not by the patient based on the office's offer.

Healing and scar

After the procedure, a scar remains - this is an inevitable consequence of every incision. Its appearance depends on the location, skin tension, individual predispositions and compliance with recommendations.

The following are usually recommended:

• keeping the wound clean and dry as recommended,
• avoiding stretching the area and intense exercise in the first days,
• refraining from the swimming pool, sauna and long baths until healing,
• removing the stitches within the prescribed period,
• protection of the scar against the sun for the following months - a fresh scar is easily discolored,
• use of silicone dressings, if the doctor recommends them,
• requesting the result of histopathological examination.

The last point is sometimes neglected, but it is the most important. The procedure does not end on the day of excision, but on the day the results are discussed. It depends on him whether further treatment is needed, margin widening or more frequent skin inspection.

In people prone to excessive scarring, it is worth reporting it before the procedure - it changes the incision planning and postoperative recommendations.

Who should check moles regularly?

• people with fair skin, light or red hair, easily sunburned,
• people with numerous birthmarks - more than several dozen,
• people with atypical birthmarks,
• patients with a history of melanoma or other skin cancer,
• people with melanoma in the family,
• patients after numerous sunburns, especially in childhood,
• using solariums,
• working outdoors and people with intense recreational exposure,
• patients after organ transplantation and taking immunosuppressive drugs,
• people with moles in places that are difficult to treat on their own observations.

The frequency of check-ups is determined individually by the doctor. In people without risk factors, periodic skin inspection is usually sufficient, in patients with multiple factors - regular inspections at shorter intervals.

Regardless, it is worth examining the entire skin yourself from time to time, including the back and scalp - this is where the help of another person or a mirror comes in handy. Photos of your own birthmarks can be helpful for comparison, but they do not replace examination.

The most common myths

• "A mole and a birthmark are different." In practice, these are the same changes - one common name, the other medical name.
• "All moles are better removed just in case." No. Most melanomas arise on previously unaffected skin, and preventive removal does not reduce the risk.
• "Irritation of the mole causes melanoma." No. Trauma may make it difficult to evaluate the lesion, but it does not turn a benign mole into a cancer.
• "A large birthmark is more dangerous than a small one." Not necessarily. Early melanoma is sometimes smaller than 6 mm, and large moles are often benign.
• "Melanoma is always black." No. It can be brown, pink, red, or even dye-free.
• "If it doesn't hurt, it's okay." No. Early changes usually don't hurt; the pain appears late.
• "Moles can be removed with a laser." Not in the case of pigmented lesions - lack of material for histopathological examination makes diagnosis impossible.
• "An app on my phone will assess my birthmark." No. The applications do not replace dermatoscopy or medical examination.

A birthmark that is changing, looks different or is bothering you?

Dermatoscopic evaluation allows you to distinguish lesions that require removal from those that just need to be observed - without removing everything just in case.

Assessment and removal of skin lesions at the Island of Friendly Medicine in Gdańsk

At the Island of Friendly Medicine doctor. Piotr Rak consults patients with moles and other skin lesions. The visit includes examination, dermatoscopic assessment and determining whether the lesion requires removal, observation or further diagnostics.

Pigmented lesions are removed surgically, with histopathological examination - no exceptions. Part of a reliable qualification also includes advising against the procedure when the change does not raise suspicion and observation is enough. The current scope of treatments, availability of dates and prices should be confirmed during registration.

Make an appointment Dermatoscopy

What to ask the doctor?

• Is my lesion a mole or something else?
• Is there anything in dermatoscopy that raises your doubts?
• Should this lesion be removed or is observation enough?
• Do I have atypical moles?
• How often should I check my skin?
• Will the lesion be sent for histopathological examination?
• When will I know the result and how will it be communicated to me?
• How big will the scar be and where will the incision be made?
• How to care for the wound and when to remove the stitches?
• Do I have risk factors that require more frequent monitoring?
• Which moles of mine are worth photographing for comparison?
• What should I worry about between visits?

FAQ - birthmarks and moles

Are a birthmark and a mole the same?

In everyday language, yes. "Mole" is a common name, "nevus" is a medical term. However, patients also call moles that are not moles - for example, seborrheic warts or fibromas.

Does every mole need to be removed?

No. Most moles are benign and only require observation. Removal is justified if it is suspected during dermatoscopy, if the lesions are evolving, or for practical reasons when the mole is constantly irritated.

Can an irritated mole become melanoma?

No. Trauma does not transform a benign lesion into cancer. However, it can cause bleeding and inflammation, which makes assessment difficult - and this is a real reason to remove a mole in an area that is constantly irritated.

What is the ABCDE rule?

This is a tool for self-observation: asymmetry, edges, color, diameter and evolution. It helps you decide when to see a doctor, but it is not used to make a diagnosis.

What is the ugly duckling symptom?

This is a rule that moles in one person are usually similar to each other. A lesion that clearly stands out from the rest - in color, shape or size - deserves evaluation, even if it does not look alarming in itself.

Can a mole be removed with a laser?

Pigmented lesions are not removed with a laser because there is no material left for histopathological examination. Without this test, melanoma cannot be ruled out and the lesion is irreversibly destroyed.

Is each removed mole subject to histopathological examination?

Yes, and this is a rule without exceptions for pigmented lesions. Dermatoscopy allows you to assess the structure of the lesion, but a certain diagnosis can only be made by microscopic examination.

Is melanoma always black?

No. It can be brown, pink, red, or even pigmentless, making it difficult to recognize. Therefore, what matters is not the color itself, but the whole image and its change over time.

Does the procedure hurt and will there be a scar?

The procedure is performed under local anesthesia. The scar always remains, because every cut leaves one; its appearance depends on the location, skin tension and individual predispositions.

How often should moles be checked?

The frequency is determined individually by the doctor. People with fair skin, numerous or atypical moles, a history of or family history of melanoma, and immunosuppressed patients require more frequent check-ups.

Will the phone app assess the birthmark?

Does not replace examination. Apps can help archive photos and compare changes over time, but they do not constitute the basis for diagnosis or decisions about surgery.

Who assesses moles in WMP?

On the WMP website, MD. Piotr Rak is described as a surgeon who performs surgical procedures, including the evaluation and removal of skin lesions. The scope and availability of treatments are confirmed by registration.

Sources

• DermNet, Melanocytic naevus: https://dermnetnz.org/topics/melanocytic-naevus
• DermNet, Atypical naevus: https://dermnetnz.org/topics/atypical-naevus
• DermNet, Melanoma: https://dermnetnz.org/topics/melanoma
• DermNet, Seborrhoeic keratosis: https://dermnetnz.org/topics/seborrhoeic-keratosis
• DermNet, Dermatoscopy: https://dermnetnz.org/topics/dermatoscopy
• NHS, Moles: https://www.nhs.uk/conditions/moles/
• NHS, Skin cancer (melanoma): https://www.nhs.uk/conditions/melanoma-skin-cancer/
• NHS, Sunscreen and sun safety: https://www.nhs.uk/live-well/seasonal-health/sunscreen-and-sun-safety/
• NICE, Melanoma: assessment and management (NG14): https://www.nice.org.uk/guidance/ng14
• NICE, Suspected cancer: recognition and referral (NG12): https://www.nice.org.uk/guidance/ng12
• British Association of Dermatologists, patient information: https://www.bad.org.uk/patient-information-leaflets/