Consultant dermatologist examining facial skin with a dermatoscope during a professional mole check and skin cancer screening in London.

Different Types of Moles and What They Mean

13 January 2026

Get a mole checked in london

By Dr Hiba Injibar | Consultant Dermatologist, Dermasurge Harley Street

Introduction

Moles are a normal part of human skin, yet many patients are unsure what their moles actually mean—or whether they should be concerned about them. Understanding the different types of moles, including the difference between benign vs atypical moles, can help you recognise when a mole is harmless and when it may require professional assessment.

At Dermasurge Clinic on Harley Street, Consultant Dermatologist Dr Hiba Injibar regularly assesses pigmented moles and other skin lesions as part of routine mole checks, skin cancer screening, and mole removal consultations. With over 20 years of experience, she helps patients gain clarity, reassurance, and expert guidance.

This guide explains the most common types of moles, what they typically mean, and when it’s time to seek advice from a dermatologist.

What Is a Mole?

A mole (also known as a naevus) is a growth on the skin made up of pigment-producing cells called melanocytes. Moles can appear at birth or develop later in life, often influenced by genetics, sun exposure, and hormonal changes.

Most people have between 10 and 40 moles, and the majority are completely benign. However, not all moles behave in the same way—which is why understanding the types of moles is important.

Close-up of a benign pigmented mole on the face, commonly assessed by a dermatologist during mole checks and skin examinations.

Common Types of Moles

1. Common (Benign) Moles

Benign moles are the most common type and are usually harmless.

Typical characteristics include:

Symmetrical shape
Smooth, even borders
A single, uniform colour (usually brown or tan)
Stable size and appearance over time

These moles rarely require treatment unless they become irritated, catch on clothing, or are removed for cosmetic reasons.

👉 Learn more about benign moles and removal options here:
https://dermasurge.co.uk/medical-dermatology/mole-removal-london/

Close-up of a benign pigmented mole on facial skin, illustrating common types of moles assessed by dermatologists

2. Atypical (Dysplastic) Moles

Atypical moles—sometimes called dysplastic naevi—sit between benign moles and potentially concerning lesions. Understanding benign vs atypical moles is essential, as atypical moles require closer monitoring.

They may appear:

Larger than common moles
Asymmetrical
With irregular or blurred borders
With multiple shades of colour

While atypical moles are not cancerous, they may carry a higher risk of developing changes over time. Regular dermatologist review is often recommended.

3. Pigmented Moles

Pigmented moles contain higher concentrations of melanin, making them appear darker—ranging from dark brown to black.

Pigmented moles can be:

Benign and stable
Congenital (present from birth)
Acquired later in life

Darker colour alone does not mean a mole is dangerous. However, pigmented moles that change, grow, or develop irregular features should always be assessed by a dermatologist.

4. Congenital Moles (Present at Birth)

Congenital moles are present from birth or develop shortly after. They can vary greatly in size and colour.

Small congenital moles are usually low risk
Larger congenital moles may require ongoing monitoring

Your dermatologist will advise whether observation or removal is appropriate based on size, location, and behaviour.

5. Raised Moles

Raised moles sit above the surface of the skin and may be flesh-coloured or pigmented.

These moles are often benign but should be checked if they:

Bleed or crust
Catch on clothing or shaving
Change in shape or colour

Raised moles are frequently removed for comfort or cosmetic reasons using safe, dermatologist-led techniques.

6. Flat Moles

Flat moles lie level with the skin and are usually evenly pigmented.

They should be assessed if they:

Darken or spread
Develop irregular borders
Change in size or colour

Again, change over time is the most important factor—not whether a mole is flat or raised.

Benign vs Atypical Moles: Why the Difference Matters

Understanding benign vs atypical moles helps determine whether a mole can be safely left alone or needs closer observation.

Benign moles remain stable and predictable
Atypical moles may evolve and benefit from regular monitoring

A dermatologist uses tools such as dermoscopy to examine the mole’s structure beneath the surface, allowing for accurate classification and guidance.

When Should Different Types of Moles Be Checked?

Regardless of the type, a mole should be checked if it:

Changes in size, shape, or colour
Becomes itchy, painful, or starts bleeding
Looks different from your other moles
Appears for the first time in adulthood

If you have many moles or a family history of skin cancer, routine professional checks are especially important.

Dermasurge also offers full skin cancer screening for comprehensive assessment:
👉 https://dermasurge.co.uk/medical-dermatology/skin-cancer-screening/

What Happens If a Mole Needs to Be Removed?

If a mole is causing concern—medically or cosmetically—your dermatologist may recommend removal.

At Dermasurge, mole removal is:

Consultant-led
Performed using safe, evidence-based techniques
Focused on minimal scarring and optimal healing

You can read a full expert guide here:
👉 https://dermasurge.co.uk/mole-removal-in-london-expert-dermatologist-explains/

Dr Hiba Injibar and the Dermasurge Clinic Team in Harley Street — The Dermasurge Clinic Team

Why Choose Dermasurge for Mole Assessment in London

Patients choose Dermasurge Harley Street because of:

Consultant Dermatologist–led care
Over 20 years of clinical experience
Advanced diagnostic technology
Honest, personalised recommendations
A discreet and professional Harley Street setting

Whether your concern is medical, preventative, or cosmetic, your care is always tailored and unhurried.

Summary: Understanding Your Moles Brings Peace of Mind

Most moles are harmless—but knowing the types of moles, recognising the difference between benign vs atypical moles, and understanding how pigmented moles behave can help you take control of your skin health.

If a mole concerns you, professional assessment is always the safest step.

FAQ: Different Types of Moles

Are all pigmented moles dangerous?

No. Many pigmented moles are completely benign. Dark colour alone is not a warning sign—changes in appearance are more important.

What is the difference between benign vs atypical moles?

Benign moles are symmetrical, evenly coloured, and stable. Atypical moles may be larger, irregular, or multi-coloured and often require closer monitoring.