Moles are common skin growths that most people will have at some point in their lives. While the majority are harmless, some may develop into something more concerning, such as skin cancer. Being able to recognise the difference between normal and unusual moles is an important step in protecting your health. If you’re unsure about a mole, seeking professional advice through a mole screening London clinic can give you peace of mind.
In this guide, we’ll look at what’s considered normal, what changes to watch for, and when it’s time to book a check-up.
What Is a Mole?
A mole, also known as a nevus, is a small cluster of pigmented skin cells. They often appear as brown, black, or skin-coloured spots and can be flat or slightly raised. Some people are born with moles, while others develop them over time, especially during childhood and early adulthood.
Most moles are:
- Round or oval in shape
- Symmetrical in appearance
- Consistent in colour
- Small, usually less than 6mm in diameter
It’s normal for new moles to appear up until your 30s. After this age, it’s less common to develop new ones, which is why sudden changes or new growths later in life should be checked.
The ABCDE Rule: Spotting Unusual Moles
Dermatologists often use the ABCDE rule to help identify signs of abnormal moles. This simple method can also help you keep track of your own skin.
- A – Asymmetry: Normal moles are usually symmetrical. If one half looks different from the other, it could be a warning sign.
- B – Border: Healthy moles have smooth, even borders. Irregular, jagged, or blurred edges should be assessed.
- C – Colour: A mole with multiple shades (brown, black, red, or even blue) may need checking.
- D – Diameter: Moles larger than 6mm (about the size of a pencil eraser) are more concerning.
- E – Evolving: Any mole that changes in size, shape, or colour over time, or develops new symptoms such as itching or bleeding, should be examined.
Normal Variations vs. Warning Signs
Not all unusual-looking moles are dangerous, but it’s important to know the difference between common variations and signs that require medical attention.
Normal Variations:
- Raised, dome-shaped moles that have been stable for years
- Moles with hair growing from them
- Flat, evenly coloured freckles or sunspots
Warning Signs:
- A new mole appearing after the age of 40
- Rapid changes in appearance
- Pain, itching, or bleeding
- Ulceration or scabbing that doesn’t heal
If you notice any of these warning signs, don’t wait—book an appointment for a professional assessment.
Why Mole Screening Matters
Early detection is the most effective way to reduce the risk of skin cancer, particularly melanoma. Many people put off having their skin checked, but regular screenings can catch changes before they become serious.
A mole screening London service typically involves a dermatologist or trained skin specialist examining your moles with a dermatoscope—a magnifying tool that helps identify patterns invisible to the naked eye. They will document and monitor any changes, and if anything looks suspicious, they can arrange further testing or removal.
Screenings are quick, painless, and can provide reassurance, especially if you have:
- A family history of skin cancer
- A large number of moles
- Fair skin that burns easily
- A history of sunburn or high UV exposure
How to Check Your Skin at Home
In addition to professional screenings, regular self-checks are vital. Aim to examine your skin once a month, ideally in good lighting and with a full-length mirror. Use a handheld mirror for hard-to-see areas like your back, scalp, and the backs of your legs.
Tips for self-checking:
- Start from your head and work downwards systematically
- Don’t forget hidden spots such as between fingers and toes
- Take photos to track changes over time
- Ask a partner or friend to check areas you can’t see clearly
When to See a Dermatologist
It can be difficult to tell if a mole is harmless or potentially dangerous. If you’re unsure, it’s always better to seek medical advice rather than waiting. See a dermatologist promptly if:
- You spot a mole that fits any of the ABCDE warning signs
- You have a mole that looks significantly different from your other moles (“the ugly duckling” sign)
- You’ve had previous skin cancers removed and notice new growths
Final Thoughts
Most moles are perfectly normal and nothing to worry about. However, understanding what’s typical and what isn’t could make a real difference to your health. Keep an eye on your skin, use the ABCDE rule as a guide, and remember that early action is key.
If you’re concerned about a mole or just want the reassurance of a professional check, consider booking a mole screening London appointment. A short consultation could give you peace of mind and ensure that any issues are caught early.
