A new or changing spot on a child can be easy to explain away as a scratch, insect bite or ordinary mole. Most will be harmless. But skin cancer signs in children should never be ignored simply because skin cancer is uncommon at a young age. In Australia, where UV exposure is intense, knowing what deserves a medical assessment can protect your child’s health.
Skin cancer in children is rare, and that is reassuring. It is not, however, impossible. Melanoma and other skin cancers can occur in children and teenagers, particularly where there is a strong family history, very fair skin, a large number of moles, a weakened immune system or a history of significant sunburn. Early assessment matters because a changing lesion cannot be reliably diagnosed by appearance alone.
Why changes in a child’s skin deserve attention
Children grow quickly, and their moles can grow with them. This can make skin changes confusing for parents. A mole that becomes proportionally larger as a child grows may be normal, while a spot that changes in shape, colour, surface or behaviour may need closer examination.
The useful question is not, “Does this look exactly like a textbook melanoma?” It is, “Is this spot new, changing, unusual for my child, or refusing to heal?” Parents know their child’s skin better than anyone. If something looks or behaves differently from their usual freckles and moles, arrange a GP appointment rather than waiting for the next school holidays or summer break.
A clinician can examine the lesion with a dermatoscope, ask about its history and decide whether monitoring, referral or removal is appropriate. Most suspicious-looking spots are not cancer. That is precisely why prompt assessment is worthwhile: it replaces worry and guesswork with an informed medical decision.
Skin cancer signs in children to look for
The familiar ABCDE guide can be a useful starting point for pigmented moles, but it does not identify every concerning lesion in children. Some melanomas, particularly in younger children, may be raised, pink, red or skin-coloured rather than dark brown or black.
A mole that is changing or stands out
Watch for asymmetry, where one half of a mole does not match the other; an irregular or blurred border; several colours in one spot; or a noticeable increase in size. Diameter alone is not a reliable rule. A small lesion can still require assessment, especially if it is changing.
Also look for the “ugly duckling” sign. This is a mole or spot that looks noticeably different from the child’s other marks. It may be darker, paler, raised, unusually shaped or simply unlike the rest. This comparison is often more useful than trying to judge one mole in isolation.
A bump or patch that keeps changing
Do not limit your attention to moles. A persistent pink, red, pearly, scaly or firm bump should be checked if it grows, crusts, bleeds or does not settle. So should a sore, scab or patch of skin that heals and then returns in the same place.
A lesion that itches, hurts, bleeds without a clear injury, or becomes tender can have many non-cancerous explanations. Eczema, warts, infections and insect bites are common. But persistence is the key concern. If treatment has not worked or the spot remains after a few weeks, seek medical advice.
Changes in nails, eyes and less visible areas
Check areas that receive less everyday attention, including the scalp, behind the ears, between toes, soles of feet, genital area and under fingernails and toenails. A new or widening dark streak in a nail, particularly if pigment spreads onto the surrounding skin, should be assessed.
Rarely, concerning pigment changes can occur in the eye. A new dark spot on the coloured part of the eye, changes in the appearance of an existing spot, persistent redness or visual symptoms warrant review by an optometrist, GP or ophthalmologist. Do not attempt to diagnose eye changes from online images.
When to book an appointment and when to act urgently
Book a GP appointment promptly if a spot is new and growing, changing in colour or shape, repeatedly bleeding, ulcerated, painful, itchy without settling, or clearly different from other moles. Take a clear photograph in good light, with the date recorded, if it will help you describe the change. Photography can support the consultation, but it must not become a reason to delay it.
Seek urgent medical care if a lesion is bleeding heavily, shows signs of a serious infection such as spreading redness and fever, or is associated with sudden eye symptoms. These situations may not indicate skin cancer, but they need timely clinical attention.
For a concerning mole or lesion, start with your GP. They can assess your child and arrange referral to a dermatologist, paediatrician or another appropriate specialist where needed. A skin check clinic may be suitable in some circumstances, but children with a suspicious or complex lesion may need paediatric-focused assessment. Ask when booking whether the service assesses children.
Routine full-body skin cancer screening is not generally recommended for every child at average risk. Targeted assessment is different. A child with many unusual moles, a previous skin cancer, a close family history of melanoma, a genetic cancer syndrome or immune suppression may need an individual surveillance plan from their treating team or dermatologist.
Children at higher risk of skin cancer
Any child can develop a concerning skin lesion, including children with darker skin. Skin cancer can be harder to notice in skin of colour and may appear in less sun-exposed areas, such as the palms, soles or nails. Do not let skin tone create false reassurance.
Risk can be higher for children who burn easily, have red or fair hair, freckles or numerous moles. A parent, sibling or close relative with melanoma also matters, especially where melanoma has occurred at a young age or affected several family members. Immune-suppressing medicines and medical conditions that affect immunity can further increase risk.
Sun exposure is only one part of the picture, but it is a major preventable factor. Severe sunburn in childhood is not harmless or temporary. UV damage accumulates over time, and protecting children now supports healthier skin later in life.
Sun protection without relying on sunscreen alone
Australian sun protection needs to be practical enough for school days, sport, beach trips and time in the backyard. Use a broad-brimmed hat, sun-protective clothing, sunglasses and shade as the main layers of defence. Apply broad-spectrum, water-resistant SPF 50+ sunscreen to exposed skin, and reapply at least every two hours or more often after swimming, sweating or towel drying.
Sunscreen is valuable, but it is not a permission slip for longer time in harsh sun. When UV levels are 3 or above, combine all protective measures. Check the local UV forecast and plan outdoor activities around shade where possible, especially during the middle of the day when UV can be strongest.
Babies need particular care. Keep them in shade and protective clothing, and seek advice from a health professional about sun protection for very young infants. For older children, the goal is not fear of the outdoors. It is building ordinary habits that reduce unnecessary UV exposure.
How to check your child’s skin calmly
A quick check during bath time, while applying moisturiser, or before and after summer can help you notice what is normal. Look at the scalp by parting the hair, and remember the ears, back, feet and nails. There is no need to repeatedly inspect every freckle or create anxiety around normal skin variation.
If you notice a spot, write down when you first saw it and whether it has changed. Avoid picking, squeezing, using home remedies or trying to remove it yourself. These actions can irritate the skin and make clinical assessment more difficult.
The most useful response is calm, timely action. Trust the change you can see, protect your child from UV today, and let a qualified clinician decide what needs further attention. Knowledge can save your life – and, for a child, a parent’s decision to ask can make all the difference.