Moles & Skin Cancer Screening

Our skin is constantly exposed to the sun and the environment. Over time, new moles and spots can appear, while existing ones may change in shape or colour. Most of these marks are harmless, but sometimes they may signal the beginning of skin cancer.

A skin cancer screening is a simple and effective way to keep your skin health in check. At Dermatology Collective, our dermatologists carefully examine your skin, identify unusual growths and provide expert guidance on what to do next. Whether you are worried about a specific mole or simply want peace of mind, a professional check can make all the difference.

Understanding Moles and Skin Cancer

Skin cancer often begins as a small and subtle change on the skin. This can either be a spot that grows, a mole that darkens, or a patch that refuses to heal. Because the changes are often subtle, it is important to know the difference between a harmless mole and a suspicious one. This helps you to act early.

What are Moles?

Moles are clusters of pigment cells that appear as brown, black or flesh-coloured spots on the skin. They can be flat or raised, smooth or rough, round- or irregularly-shaped. Many people develop moles during childhood or adolescence. They may increase in number with sun exposure. Most moles stay stable and cause no trouble, but some can evolve into melanoma, the most serious type of skin cancer.

What are the types of Moles?

While not all moles look the same, some of the common types include:

• Common moles – small, round, and uniform in colour. They are usually harmless.
• Atypical (dysplastic) moles – larger than usual with uneven shapes or colours. These can resemble melanoma and need closer monitoring.
• Congenital moles – these moles are present at birth, with larger ones carrying a slightly higher risk of skin cancer later in life.
• Blue moles – appear bluish due to deeper pigment. They are usually harmless but can resemble melanoma.
• Halo moles – these moles are surrounded by a white ring. They are typically harmless but sometimes linked to changes in the immune system.

When should you be concerned about a Mole?

Generally, a mole that looks different should be monitored closely. Some of the warning signs that warrant medical evaluation are:

• Uneven colour, with multiple shades in one mole
• Irregular or jagged borders
• Rapid growth in size
• New symptoms such as bleeding, itching or pain

How does a Mole become cancerous?

Most moles remain harmless throughout life. However, genetic changes within the cells can trigger abnormal growth. These changes may be caused by a combination of factors such as:

• Ultraviolet (UV) radiation – prolonged sun exposure or use of tanning beds damages DNA in skin cells, increasing the chance of mutations.
• Genetic predisposition – a family history of melanoma or atypical moles increases risk.
• Number and type of moles – having many moles, large congenital moles or atypical moles raises the risk.
• Weakened immune system – when the body’s natural defences are lower, abnormal cells are less likely to be controlled.

When a mole becomes cancerous, the melanocytes (pigment-producing cells) begin to grow rapidly. Instead of staying confined to the top layer of the skin, they can invade deeper tissues and, in advanced cases, spread to other parts of the body.

Common types of Skin Cancer

In Singapore, skin cancer is becoming more common. It is now the sixth most frequent cancer in men and the seventh in women, with rates continuing to rise, especially for non-melanoma types. 

The main types include:

• Basal cell carcinoma (BCC) – often appears as a pearly bump or a sore that does not heal. It grows slowly and rarely spreads, but it can damage nearby skin if ignored.
• Squamous cell carcinoma (SCC) – usually shows up as a scaly, red patch or a firm lump. SCC may spread if it is left untreated.
• Melanoma – the rarest but deadliest form. Melanoma can develop within an existing mole or as a new dark spot. It spreads quickly and needs urgent attention.

Melanoma is rare in Singapore, affecting only 1 in 200,000 people annually. While melanoma makes up less than one per cent of all skin cancers locally, non-melanoma skin cancers are far more common and strongly linked to long-term sun exposure.

Why is Skin Cancer Screening important?

Skin cancer screening does more than detect disease. It offers peace of mind, protects your health and supports long-term skin wellness. The main benefits also include:

Early detection for better outcomes

Finding skin cancer early means treatment is simpler and more effective. Small cancers can often be removed quickly with minimal scarring. In contrast, late-stage cancers may require more complex surgery or more innovative therapies. As such, early detection safeguards both your health and your quality of life.

Personalised care and monitoring

During a screening, our dermatologist keeps a detailed record of your skin. Over time, this makes it easier to spot subtle changes that might otherwise be missed. You also receive tailored advice on sun protection and self-checks, helping you take an active role in your skin health.

Peace of mind and reassurance

Even if no problems are found, screening gives you confidence that your skin is healthy. For many patients, this reassurance is just as valuable as the check itself.

What can you expect during a Skin Cancer Screening?

The screening is comfortable, detailed and designed to put your mind at ease. You will be guided through each step, so you know exactly what to expect. Generally, the procedure entails:

How dermatologists check your skin

The consultation usually begins with a discussion of your medical and family history, followed by a head-to-toe examination. Our dermatologist looks closely at moles, freckles and patches using both the naked eye and a dermoscope, which is a handheld device that magnifies skin structures. If something appears suspicious, further tests such as digital photography or a biopsy may be suggested.

When should I be worried about a mole?

Dermatologists often use the ABCDE rule to guide patients on what to watch for. This includes:

• A – Asymmetry: one half does not match the other
• B – Border: edges appear irregular, blurred, or jagged
• C – Colour: uneven tones such as black, brown, red, or blue within the same mole
• D – Diameter: larger than 6 mm, about the size of a pencil eraser
• E – Evolving: any change in size, shape, colour, or symptoms like bleeding

Frequency of screening

How often you need screening depends on your risk. People at higher risk may benefit from checks every 6 months, while others may only need yearly reviews. Rest assured that our dermatologist will recommend a schedule that suits your skin profile following the initial assessment and screening.

Who should consider going for Skin Cancer Screening?

While anyone can develop skin cancer, some people carry a higher risk and should be more vigilant. These include:

• Fair or sun-sensitive skin – people with naturally fair skin, light hair or freckles, tend to burn more easily under the sun. Each burn increases the chance of long-term skin damage, making regular screenings especially important.
• Frequent sun exposure – if you spend long hours outdoors for work or leisure without adequate sun protection, your skin receives a constant dose of UV rays. Over time, this damage builds up and raises the likelihood of skin cancer.
• Numerous or unusual moles – having many moles, large congenital moles or atypical moles with irregular shapes and colours increases the chance of melanoma. 
• History of severe sunburns – experiencing blistering sunburns, particularly during childhood, leaves lasting effects on the skin. These burns can alter the way cells grow and divide, making them more prone to becoming cancerous later in life.
• Family history of skin cancer – if a close relative has had melanoma or other types of skin cancer, your own risk is higher. Genetic factors can play a role, which makes proactive screening even more valuable.
• Weakened immune system – certain medications or medical conditions can lower your body’s natural defences. When the immune system is less able to repair DNA damage, abnormal cells have a better chance of growing into cancer.

Mole and Skin Cancer Screening at Dermatology Collective

At Dermatology Collective, your skin health is our priority. Our team combines modern technology with years of expertise to ensure nothing is overlooked.

Our approach to screening

We listen to your concerns, perform a thorough skin examination, and explain our findings in clear, simple terms. If any suspicious spots are found, we guide you through the next steps, whether that means monitoring, further testing or treatment.

Modern tools and techniques

We use dermoscopy and, when appropriate, digital mole mapping to capture images for future comparison. These tools allow us to detect changes that may be invisible during a routine check.

Personalised advice for ongoing monitoring

Your care does not end after the appointment. We provide tailored advice on how to protect your skin, perform self-checks at home and reduce your risk of future skin cancers.

Book Your Mole and Skin Cancer Screening Today

Do not wait until you notice a worrying change. A professional skin check takes only a short time but can make a lifelong difference. Book your appointment with Dermatology Collective today and take the first step in protecting your skin and health.