Suspicious Mole or Lesion? What to Do Next

Trust Your Instincts

Your skin is your body's largest organ — and it's one of the most communicative. A mole you've had for years suddenly looks different. A new dark spot has appeared where there wasn't one before. Perhaps something is itching, bleeding, or catching your eye in the mirror more than it used to. Whatever it is, that instinct — that small, nagging feeling that something isn't quite right — is worth listening to.

At Adare Dermatology Chelsea, we see patients every week who arrive with a mixture of anxiety and uncertainty. The most important thing we want you to know is this: coming in is always the right decision. A suspicious lesion that turns out to be completely benign is cause for reassurance, not embarrassment. And one that is caught early is one that can be treated effectively.

This guide is designed to help you understand what to look for, what to do next, and how to book a consultation with our specialist team in the heart of Chelsea.

What Is a Lesion? Understanding the Terminology

Before we go further, it helps to understand what we mean by "lesion." In dermatology, a lesion simply refers to any area of skin that is abnormal compared to the surrounding tissue. This is a broad term that covers everything from a common freckle to a mole, a cyst, a patch of discoloured skin, a growth, or an ulceration.

Not all lesions are dangerous — in fact, most are entirely harmless. However, certain characteristics can indicate that a lesion warrants professional assessment. The key is knowing what to look for and acting promptly when something changes or concerns you.

How to Identify a Suspicious Mole: The ABCDE Rule

Dermatologists use a tried-and-tested method called the ABCDE rule to assess moles and pigmented lesions. This is a simple self-examination tool you can apply at home, though it should never replace a clinical assessment.

A — Asymmetry

A healthy mole is typically symmetrical: if you were to draw a line through the middle, both halves would roughly mirror each other. A mole where one half doesn't match the other is considered asymmetrical and should be checked.

B — Border

Look at the edges of the mole. Are they smooth and well-defined, or are they irregular, ragged, notched, or blurred? Borders that appear to "fade" into the surrounding skin, or that have an uneven outline, can be a cause for concern.

C — Colour

A benign mole is usually a consistent shade of brown or tan. Be alert to moles that display multiple colours within the same spot — varying shades of brown, black, pink, red, white, or blue. Uneven pigmentation is a key warning sign.

D — Diameter

Historically, dermatologists flagged moles larger than 6mm in diameter (roughly the size of a pencil eraser) as potentially concerning. However, it's important to note that dangerous lesions can be smaller, so size alone is not a definitive indicator. Any change in size is significant.

E — Evolution

This is arguably the most important factor. Any mole or lesion that is changing — in size, shape, colour, texture, or behaviour — deserves prompt attention. This includes a mole that begins to itch, crust, bleed, or ooze without injury.

Other Warning Signs to Watch For

Beyond the ABCDE rule, there are additional signs that should prompt you to seek a professional opinion:

A new growth or spot that appears after the age of 40
A sore that doesn't heal within four to six weeks
A shiny, pearly, or translucent bump, particularly on the face, ears, or neck
A flat, flesh-coloured or scar-like lesion that is slowly spreading (this can indicate morphoeic basal cell carcinoma)
A red, scaly patch that persists or bleeds easily
A dark streak under a fingernail or toenail, not caused by trauma
Any lesion that looks obviously different from your other moles — sometimes referred to as the "ugly duckling" sign

If you notice any of the above, or simply feel uneasy about something on your skin, please do not wait. Early detection is the single most powerful tool we have in the successful treatment of skin cancer.

Who Is Most at Risk?

While anyone can develop a suspicious lesion, certain factors increase your risk. Being aware of these can help you make skin checks a regular habit:

Fair skin, light eyes, or red/blonde hair — less natural protection against UV radiation
A history of sunburn, particularly blistering burns in childhood or adolescence
A large number of moles or a history of atypical moles
A personal or family history of skin cancer or melanoma
Prolonged or occupational sun exposure
Use of tanning beds
A weakened immune system, due to illness or medication
Living or holidaying regularly in high UV environments

If several of these apply to you, we recommend annual skin surveillance appointments, even in the absence of a specific concern.

How to Check Your Own Skin at Home

We recommend performing a head-to-toe skin self-examination once a month. Here's how to do it effectively:

Choose a well-lit room with a full-length mirror. Have a hand mirror available for hard-to-see areas.
Start with your face — check the nose, lips, ears, and scalp (use a comb or hair dryer to part the hair).
Work downwards — neck, chest, torso, and back (use the hand mirror or ask a partner to help).
Don't forget your arms — examine the forearms, upper arms, hands, between the fingers, and under the nails.
Check your lower body — the front and back of the legs, between the toes, and the soles of the feet.
Photograph any moles of concern and track them over time. Many patients find this incredibly useful when attending their consultation.

If you notice anything that concerns you during your self-check, book an appointment without delay.

Booking a Consultation at Adare Dermatology Chelsea

At Adare Dermatology Chelsea, we have made the consultation process as straightforward and stress-free as possible. Here's what to expect from the moment you decide to seek help:

Step 1: Contact Our Clinic

You can book a consultation by calling our Chelsea clinic directly, using our online booking form, or emailing our patient care team. Our reception staff are experienced, discreet, and happy to advise you on the most appropriate type of appointment. You do not need a GP referral to book a private consultation with us, though we are happy to receive referrals from your GP if you have one.

Step 2: Choose the Right Appointment

We offer a range of appointment types depending on your needs:

Single lesion assessment — ideal if you have one specific mole or spot you'd like examined
Full body mole mapping — a comprehensive head-to-toe dermoscopic examination, recommended for those with multiple moles or elevated risk factors
Follow-up surveillance — for existing patients returning for scheduled monitoring

If you are unsure which appointment is right for you, simply describe your concern when you call or email and our team will guide you.

Step 3: Your Consultation with our doctor

All consultations at Adare Dermatology CChelsea are conducted by Dr. Naomi Mackle, a GMC-registered doctor with extensive expertise in skin cancer detection and lesion assessment. During your appointment:

Your doctor will take a thorough medical and skin history
Each area of concern will be examined using dermoscopy — a non-invasive technique using a specialised illuminated magnifier that allows detailed visualisation of lesion structures invisible to the naked eye
Where full body mole mapping has been requested, high-resolution photographs are taken and stored digitally for future comparison
You will receive a clear, honest explanation of the findings

Step 4: Next Steps and Treatment Planning

If a lesion requires further investigation, your dermatologist will discuss the options with you calmly and clearly. This may include:

A biopsy — a small sample of tissue taken under local anaesthetic for laboratory analysis
Surgical excision — removal of the lesion, which is often both diagnostic and curative
Referral for further specialist care if required

Where a lesion is found to be entirely benign, you'll leave with the reassurance of expert confirmation — and the knowledge of what to look for in future.

Why Choose Adare Dermatology Chelsea?

Located in one of London's most accessible and prestigious neighbourhoods, Adare Dermatology Clinic Chelsea offers:

Doctor-led care from experienced, fellowship-trained dermatologists
State-of-the-art dermoscopy and digital mole screening technology
No long waits for appointments
A calm, private clinic environment — never a rushed waiting room
Clear, transparent pricing with no hidden fees
Comprehensive written reports provided after every consultation

Don't Wait — Your Skin Deserves Expert Attention

If something on your skin is giving you pause, please act on it. The vast majority of lesions we assess turn out to be entirely harmless — but the peace of mind that comes with an expert opinion is invaluable. And in the rare cases where early intervention is needed, coming in sooner can make all the difference.

Book your consultation today. Contact Adare Dermatology Clinic Chelsea and let our specialist team give you the expert care and clarity you deserve.

Adare Dermatology Clinic Chelsea — Expert Skin Care in the Heart of London

When something doesn't look right: Your guide to identifying suspicions moles and lesions.