Most moles are benign and need nothing done. Removal is advised when a lesion is suspicious (the ABCDE rule), when it is mechanically bothersome (catches, bleeds), or for cosmetic reasons. It is done as a simple minor procedure under local anaesthesia. The crucial rule: any suspicious lesion that is removed must be sent for histological examination — never "burned off" with a laser without a diagnosis.
Almost all of us have moles, and the vast majority will never trouble us. The skin, however, is the one organ we can "monitor" ourselves — and that is an advantage. The goal is not to remove every mole, but to know which one deserves a look from a specialist.
What moles and common skin lesions are
A mole (a common naevus) is a benign cluster of pigment cells in the skin. Besides moles, in everyday practice we often see other, also usually benign, lesions:
- Skin tags — small hanging growths on the neck, armpits or eyelids.
- Sebaceous / epidermoid cysts — subcutaneous "lumps" that occasionally become inflamed.
- Seborrhoeic keratoses — "dark, warty patches" that appear with age.
- Lipomas — soft, mobile fatty lumps under the skin.
The fact that most are harmless does not mean all should be ignored — which is why the ABCDE rule exists.
When to worry: the ABCDE rule
For moles, the classic warning signs are summarised by the letters ABCDE:
- A — Asymmetry: one half does not match the other.
- B — Border: irregular, blurred or "notched" edges.
- C — Colour: uneven colour or several shades.
- D — Diameter: larger than ~6 mm (though not absolute).
- E — Evolving: any change in size, shape, colour or new symptoms — the most important sign.
Add the "ugly duckling" sign: a mole that stands out because it looks different from all the others. Itching, bleeding, or a mole that appeared recently in adult life also deserve assessment.
When removal is advised
There are four main reasons to remove a skin lesion:
- Suspicion of malignancy: any suspicious feature (ABCDE or a change) — here removal with histology is the rule.
- Mechanical irritation: a lesion that catches on clothing, a razor or jewellery and is repeatedly irritated or bleeds.
- Cosmetic reasons: an entirely legitimate patient choice.
- Diagnostic uncertainty: when something cannot be safely ruled out by observation alone.
How removal is done
In most cases this is a minor procedure under local anaesthesia: the skin is numbed, the lesion is removed (excision), and the incision is closed with stitches. It takes a few minutes, is done as an outpatient, and you return to your activities straight away. The key point: whenever there is the slightest suspicion, the specimen is sent for histological examination — so we have a definite diagnosis, not a guess.
What not to do
Avoid "home remedies" and over-the-counter mole-removal products: not only do you risk infection and an ugly scar, but — crucially — you destroy the lesion without ever learning what it was. The same applies to removing suspicious lesions with a laser alone, without histology.
When to see a doctor
Seek assessment when a lesion meets any of the ABCDE criteria, when it bothers you mechanically, or simply when you are unsure and want reassurance. A brief clinical examination — often with dermoscopy — is enough to decide whether simple monitoring or removal is needed.
When should I worry about a mole?
When it changes. Remember the ABCDE rule: Asymmetry, irregular Border, uneven Colour, Diameter larger than 6 mm, and above all Evolving (a change in size, shape or colour). A mole that bleeds, itches, or is new in adult life should also be assessed by a doctor.
Does removing a mole hurt?
No. Removal is usually done under local anaesthesia, as an outpatient minor procedure lasting a few minutes. You may feel a small sting from the initial anaesthetic injection and nothing else during the procedure.
Is a removed mole always sent for biopsy?
Any lesion removed because of suspicion should be sent for histological examination, so that something malignant can be ruled out or confirmed. This is exactly why suspicious lesions should never be 'burned off' with a laser without a diagnosis.
Can I remove a mole with a laser or at home?
Not for suspicious lesions. Lasers or over-the-counter products destroy the tissue without allowing histology, so a possible melanoma may go undetected. Home removal also carries added risks of infection and scarring.
Will there be a scar after removal?
Every incision leaves some mark, but with careful surgical technique the scar is usually small and discreet. The final result depends on the size and location of the lesion and on your skin's characteristics.