Skin Cancer & Skin Health

Skin health deserves regular attention, especially in Australia where ultraviolet radiation can be strong for much of the year. Most changes in the skin are harmless, but some spots, moles and lesions need a closer look. Skin cancer can develop slowly and without pain, which is why noticing change matters more than waiting for something to feel wrong.

Looking after the skin is not only about preventing sunburn. It also means understanding your own skin, recognising changes that are unusual for you and protecting areas that receive regular sun exposure. A simple routine of sun protection and regular skin awareness can make an important difference over time.

The Main Types of Skin Cancer

The three skin cancers most commonly discussed are melanoma, basal cell carcinoma and squamous cell carcinoma.

They behave differently and can look different on the skin.

Melanoma

Melanoma begins in melanocytes, the cells that produce pigment in the skin. It can develop in an existing mole or appear as a new spot.

Melanoma is less common than some other skin cancers but is more likely to spread to other parts of the body if it is not detected early.

Changes in colour, shape, size or appearance can be important. Some melanomas do not look like a typical dark mole, so any new or changing lesion deserves attention.

Basal Cell Carcinoma

Basal cell carcinoma, often called BCC, is a common form of skin cancer.

It often develops on parts of the body that receive a lot of sun, such as the face, ears, neck, shoulders and arms. A BCC may look like a shiny bump, a pink or red patch, a sore that does not heal or an area that repeatedly bleeds and crusts.

BCCs usually grow slowly and are less likely to spread to distant parts of the body, but they can damage nearby tissue if they continue to grow.

Squamous Cell Carcinoma

Squamous cell carcinoma, or SCC, often appears on sun-exposed skin.

It may look like a firm red lump, a thick or scaly patch, a crusted area or a sore that does not heal. Some SCCs grow quickly and can spread, particularly when they develop in certain locations or in people with reduced immune function.

Why UV Exposure Matters

Ultraviolet radiation damages the DNA inside skin cells.

The body can repair some of this damage, but repeated exposure over many years can build up. This is one reason skin cancer can appear long after periods of heavy sun exposure.

Sunburn is an obvious sign of UV damage, but the skin can still be affected without becoming red or painful.

UV exposure comes from direct sunlight as well as reflected light from surfaces such as water, sand and concrete. It can also reach the skin on days that do not feel particularly hot.

Temperature is not a good measure of UV strength.

Understanding Your Own Skin

Everyone’s skin looks different.

Some people naturally have many moles or freckles, while others have very few. This makes familiarity with your own skin useful.

A spot that looks unusual compared with the rest of your skin can sometimes be more important than whether it matches a textbook description.

Changes worth noticing include:

• a new spot that continues to grow
• a mole that changes shape or colour
• a lesion that looks different from nearby spots
• a sore that does not heal
• repeated bleeding or crusting
• ongoing itching, tenderness or irritation
• a raised area that becomes thicker
• a patch that changes over several weeks or months

Keeping an eye on change can make it easier to notice when something deserves assessment.

The ABCDE Guide for Moles

The ABCDE guide is commonly used when looking at pigmented spots and moles.

A — Asymmetry

One half of the spot does not look like the other half.

B — Border

The edges may be irregular, uneven or poorly defined.

C — Colour

There may be several colours within the same spot, including different shades of brown, black, red, pink, white or blue.

D — Diameter

Larger lesions can attract attention, although melanoma can also be small.

E — Evolving

Any change in size, shape, colour, height or symptoms can be important.

The last point is particularly useful. A changing lesion often deserves more attention than one that has looked the same for years.

The “Ugly Duckling” Sign

Another useful idea is the “ugly duckling” sign.

Most people’s moles tend to follow a pattern. They may be similar in colour, size or shape.

A spot that looks noticeably different from all the others may stand out even if it does not meet every ABCDE feature.

Knowing the normal pattern of your own skin can therefore be valuable.

Skin Checks at Home

A skin check does not need to be complicated.

Good lighting and a mirror can help. It is useful to look over the whole body rather than only the areas that receive obvious sun exposure.

Areas that can be easy to miss include:

• the scalp
• behind the ears
• the back of the neck
• the back and shoulders
• between the fingers and toes
• the soles of the feet
• under the nails
• the backs of the legs

Taking photographs of selected moles or spots can make it easier to notice change over time, particularly when someone has many moles.

Who Has a Higher Risk?

Anyone can develop skin cancer, but some factors increase the risk.

These include:

• fair skin that burns easily
• a history of frequent sunburn
• significant sun exposure over many years
• many moles
• unusual or atypical moles
• a personal history of skin cancer
• a close family history of melanoma
• outdoor work
• regular outdoor sport or recreation
• reduced immune function
• increasing age

People with darker skin can still develop skin cancer. It may sometimes occur in less sun-exposed areas and may be recognised later because awareness is lower.

Sun Protection Is More Than Sunscreen

Sunscreen is useful, but it works best as one part of a broader approach.

Good sun protection can include:

• seeking shade
• wearing clothing that covers the skin
• using a broad-brimmed hat
• wearing sunglasses
• applying broad-spectrum sunscreen
• planning outdoor activities around periods of lower UV exposure when practical

No single measure provides complete protection.

Clothing and shade can be particularly useful because they do not rely on remembering to reapply a product.

Choosing and Using Sunscreen

For strong Australian conditions, a high-protection broad-spectrum sunscreen is generally the practical choice.

The label should indicate protection against both UVA and UVB radiation.

SPF refers mainly to protection from UVB, the radiation closely linked with sunburn. Broad-spectrum protection is important because UVA also contributes to skin ageing and skin damage.

Water-resistant sunscreen can be useful during swimming, sport or heavy sweating.

The amount applied matters. Using too little sunscreen reduces the level of protection.

Reapplying Sunscreen

Sunscreen does not last all day.

It needs to be reapplied regularly, particularly after swimming, sweating or towel drying.

Areas people often miss include:

• ears
• neck
• lips
• backs of the hands
• tops of the feet
• hairline
• around clothing edges

Sunscreen is easiest to use well when it becomes part of the routine rather than something remembered only at the beach.

Sun Protection for the Face

The face receives frequent UV exposure because it is rarely covered completely.

This can contribute to pigmentation, fine lines, rough texture and skin cancers over time.

Daily facial sun protection can be useful for people who spend time outdoors, drive regularly or sit near strong sunlight.

A sunscreen that feels comfortable on the skin is often easier to use consistently. Some people prefer lighter formulas, while others need products designed for dry, sensitive or acne-prone skin.

Skin Cancer and the Scalp

The scalp is easily overlooked.

People with thinning hair, short hair or bald areas can receive significant sun exposure on the scalp.

Hats provide useful protection, but exposed areas may still need sunscreen.

Scalp lesions can also be difficult to see. A hairdresser, partner or family member may sometimes notice a spot before the person does.

Skin Cancer and the Lips

The lips can also be damaged by long-term sun exposure.

Persistent roughness, scaling, cracking or a sore that does not heal can deserve attention.

A lip product with sun protection may help reduce repeated UV exposure, particularly for people who spend a lot of time outdoors.

Actinic Keratoses

Actinic keratoses are rough, scaly areas caused by long-term sun damage.

They commonly appear on areas such as the face, scalp, ears, forearms and backs of the hands.

They may feel easier to detect than to see because the skin can become rough or sandpaper-like.

Some actinic keratoses can develop into squamous cell carcinoma, which is why persistent areas of sun-damaged skin should not simply be ignored.

Moles, Freckles and Other Benign Spots

Most moles and freckles are harmless.

Many people also develop other benign skin growths as they get older, including seborrhoeic keratoses and skin tags.

The difficulty is that harmless and concerning lesions can sometimes look similar without closer examination.

This is another reason change over time matters.

A spot does not need to look dramatic to deserve attention if it is new, changing or behaving differently from the rest.

A Sore That Does Not Heal

A non-healing sore is one of the skin changes that should not be repeatedly dismissed.

Some skin cancers can look like a small cut, crust or irritated patch.

It may improve for a short time and then return.

Repeated bleeding from the same spot, particularly without a clear injury, is another reason to have the area looked at.

Skin Health Beyond Cancer

Healthy skin is not only about cancer prevention.

The skin acts as a barrier that helps protect the body from the outside environment. Dryness, irritation, inflammation and infection can all interfere with that barrier.

Good basic skin care does not need to be complicated.

For many people, it comes down to:

• gentle cleansing
• avoiding unnecessary irritation
• using moisturiser when the skin is dry
• protecting the skin from excessive sun
• treating persistent problems rather than repeatedly covering them up

A simple routine that suits the skin is often more useful than using many products at once.

Dry and Sensitive Skin

Dry skin can feel tight, rough, itchy or flaky.

Weather, frequent washing, hot showers, harsh cleansers and some medical conditions can all contribute.

Using a gentle cleanser and regular moisturiser may help support the skin barrier.

Sensitive skin can react to fragrance, active ingredients or frequent changes in products. Introducing new products one at a time can make it easier to work out what is causing irritation.

Acne and Sun Exposure

Some people notice that acne appears temporarily better after time in the sun because tanning can reduce the appearance of redness.

That does not make sun exposure a treatment for acne.

UV damage continues even when the skin looks clearer.

Some acne medicines and skin treatments can also make the skin more sensitive to sunlight, which makes sun protection particularly important.

Skin Ageing and Sun Damage

A large part of visible skin ageing is linked with cumulative sun exposure.

Over time, this can contribute to:

• fine lines
• uneven pigmentation
• loss of elasticity
• rough texture
• visible blood vessels
• areas of persistent sun damage

Sun protection cannot stop natural ageing, but it can reduce the amount of avoidable UV-related damage.

Starting later is still useful. Skin protection does not become pointless simply because sun damage has already occurred.

Children and Sun Protection

Childhood sun exposure contributes to lifetime UV damage.

Young children often spend long periods outdoors and may not recognise when they are becoming sunburnt.

Shade, suitable clothing, hats and sunscreen can all play a role.

Building sun protection into normal routines from an early age can make it feel less like an extra task later in life.

Outdoor Work and Sport

People who work or exercise outdoors can accumulate large amounts of UV exposure without deliberately spending time in the sun.

Construction workers, gardeners, farmers, tradespeople, coaches, runners, cyclists and people involved in water sports are common examples.

Protection needs to work in real conditions.

That may mean choosing lightweight long-sleeved clothing, keeping sunscreen readily available and using hats that are practical for the activity.

Tanning and Skin Damage

A tan is a sign that the skin has responded to UV exposure.

It is not evidence that the skin has become healthy or protected.

Artificial tanning devices can expose the skin to intense UV radiation and increase skin cancer risk.

Trying to build a “base tan” before a holiday does not provide meaningful protection from later sun damage.

Vitamin D and Sun Exposure

Sunlight helps the body produce vitamin D, but this does not mean prolonged or unprotected sun exposure is necessary.

Vitamin D needs can depend on skin type, age, clothing, time spent outdoors and other factors.

The balance between maintaining vitamin D and reducing UV damage can vary between individuals and seasons.

Changes After Previous Skin Cancer

People who have already had one skin cancer have a higher chance of developing another.

That makes ongoing attention particularly important.

A previous lesion may have been successfully treated, but it does not mean future changes should be assumed to be the same type or harmless.

Regular awareness of the whole skin remains useful, not only the site where the previous cancer occurred.

When Skin Changes Deserve Attention

Certain changes are worth taking seriously, including:

• a new lesion that keeps growing
• a mole that changes
• a spot with several colours
• an irregular border
• repeated bleeding
• a sore that does not heal
• persistent crusting
• a firm or rapidly growing lump
• a lesion that feels noticeably different from others
• an area that continues to itch, hurt or become irritated

A lesion does not have to be painful to be important.

Many early skin cancers cause little or no discomfort.

Building a Practical Skin Health Routine

Skin health is easier to manage when a few simple habits become routine.

That may mean checking the skin from time to time, keeping photographs of spots that are difficult to remember, wearing a hat outdoors and keeping sunscreen somewhere it will actually be used.

The most useful habits are usually the ones that fit easily into daily life.

Skin cancer prevention is not about avoiding the outdoors. It is about reducing unnecessary UV exposure while continuing to enjoy normal activities.

Paying Attention Over Time

The skin changes throughout life.

New spots appear, old ones may change slowly, and sun exposure accumulated over many years can begin to show later.

Most changes will not turn out to be skin cancer, but knowing what is normal for your own skin makes unusual changes easier to recognise.

Good skin health comes from a combination of protection, awareness and timely attention to anything that does not look or behave as expected. Those simple habits remain some of the most practical ways to look after the skin over the long term.