A spot that repeatedly scabs, bleeds after a light rub, or simply will not heal deserves more than a wait-and-see approach. This basal cell carcinoma guide explains what to look for, why prompt assessment matters and what typically happens after a diagnosis. Basal cell carcinoma is rarely the skin cancer people fear most, but it is the most common, and delaying care can allow it to cause significant local damage.

Australia’s high UV levels mean cumulative sun exposure is part of life for many people – particularly outdoor workers, surfers, gardeners, golfers and anyone who has spent years in the sun. Knowledge can save your life, but it also protects your health, comfort and confidence by helping you act before a lesion becomes harder to treat.

What is basal cell carcinoma?

Basal cell carcinoma, often called BCC, is a type of non-melanoma skin cancer. It begins in basal cells, which sit in the lower layer of the epidermis. Most BCCs grow slowly and are highly treatable, especially when found early.

Unlike melanoma, BCC very rarely spreads to distant parts of the body. That does not make it harmless. An untreated BCC can grow deeper into surrounding skin and tissue. On the face, ears, lips, scalp or around the eyes, it can eventually affect cartilage, muscle, nerves or bone. Treatment may then require a larger procedure and a more complex repair.

BCC is strongly linked with ultraviolet radiation. Years of intermittent intense sun exposure, frequent sunburn and living or working outdoors can all contribute. It is common on sun-exposed areas such as the nose, cheeks, ears, scalp, neck, shoulders, chest and back. However, it can occur anywhere on the body, including areas that receive little sun.

Basal cell carcinoma guide: warning signs to know

BCC does not have one fixed appearance. Some lesions look pearly or pink; others are red, scaly, crusted or skin-coloured. A spot may be subtle for months, which is why changes matter more than whether a lesion looks dramatic.

Common warning signs include a shiny bump with a rolled edge, a sore that does not heal, a patch that is persistently scaly or irritated, or a lesion that bleeds with minimal contact. Some BCCs appear as a flat, pale scar-like area with poorly defined edges. In people with darker skin tones, a BCC can be pigmented and may appear brown, blue, grey or black, which can make it easier to mistake for another type of lesion.

Pay particular attention to a spot that changes, itches, hurts, crusts or returns after seeming to settle. A lesion that repeatedly forms a scab is not “just dry skin” until a clinician has assessed it. Neither is a rough patch that persists despite moisturiser, or a pimple-like bump that stays in the same place for weeks.

A skin check is the right next step when you notice a new, changing or non-healing lesion. Do not try to diagnose it from photographs alone. A GP with skin cancer expertise, skin cancer doctor or dermatologist can examine the area properly, often using dermoscopy, a magnified light-based assessment tool.

Who has a higher risk?

Anyone can develop BCC. Fair skin, freckles, light eyes and a history of sunburn can increase risk, but they are not entry requirements. Skin cancer is often overlooked in people with skin of colour, which can contribute to delayed diagnosis. Any changing, bleeding or non-healing skin lesion warrants medical review regardless of skin tone.

Your risk is also higher if you have had a previous BCC or another skin cancer, have a family history of skin cancer, take medicines that suppress the immune system, have had radiotherapy, or have significant cumulative UV exposure. Older age raises risk because UV damage builds over time, but younger adults can develop BCC too.

Outdoor occupations deserve special attention. Tradies, farmers, delivery drivers, lifeguards, sports coaches and others who work outside can receive high UV exposure even on cool or cloudy days. In much of Australia, UV can be strong enough to damage skin well before the temperature feels hot.

What happens at a skin check?

A clinician will ask when you first noticed the lesion, whether it has changed and whether you have a personal or family history of skin cancer. They may check the specific spot or conduct a full-body examination, depending on your concern and risk profile.

If a lesion looks suspicious, the clinician may recommend a biopsy. This means taking a small sample, or sometimes removing the whole lesion, to be examined in a laboratory. A biopsy is the only way to confirm whether a spot is BCC and identify its subtype.

This can sound daunting, but it provides the information needed to choose the most suitable treatment. It is better to have a clear answer than to keep monitoring a lesion that needs care. Every minute counts when it comes to arranging assessment, especially if a spot is bleeding, ulcerated, growing quickly or located near the eye, nose, ear or lip.

Treatment depends on the type, size and location

Surgical excision is a common treatment for BCC. The doctor removes the cancer with a margin of normal-looking skin, then the sample is checked to confirm it has been fully removed. This approach is often effective and offers certainty about the edges of the lesion.

For BCCs in high-risk or cosmetically sensitive areas, specialised margin-controlled surgery may be recommended. This is particularly relevant for some cancers on the central face, ears, eyelids or recurrent lesions. It can preserve as much healthy tissue as possible while ensuring the cancer is cleared.

Other options may suit carefully selected, low-risk superficial BCCs. These can include topical prescription creams, curettage and cautery, cryotherapy, photodynamic therapy or radiotherapy. Each option has trade-offs. A cream may avoid a surgical wound but requires reliable use and follow-up. Cryotherapy can be quick but is not appropriate for every subtype or location. Radiotherapy may be useful when surgery is unsuitable, though it is generally not the first choice for everyone.

Your treating clinician should explain why a particular option is recommended, the chance of recurrence, likely scarring, healing time and follow-up needs. If you are uncertain, ask questions. The right treatment is not always the quickest one – it is the one that offers appropriate cancer control for your lesion and circumstances.

After treatment: stay alert for new lesions

Having one BCC increases your chance of developing another skin cancer in the future. That does not mean you have done anything wrong. It means ongoing surveillance is sensible.

Follow the review plan set by your clinician and get to know your own skin. Check difficult areas using mirrors or ask a partner, friend or family member to look at your scalp, back and behind your ears. If a treated area becomes persistently sore, crusted or changes again, book a review rather than assuming it is normal healing.

Regular checks are especially valuable for people with prior skin cancers, extensive sun damage or many changing spots. The interval varies. Some people need closer follow-up than others, so personal advice from a clinician matters more than a one-size-fits-all schedule.

Reduce future UV damage without relying on one strategy

Sun protection works best as a routine, not as a response to sunburn. Check the UV Index and protect your skin whenever it is 3 or above. Seek shade where practical, wear covering clothing, a broad-brimmed hat and close-fitting sunglasses, and apply broad-spectrum SPF 50+ sunscreen generously to exposed skin.

Sunscreen is useful, but it is not permission to stay in harsh sun longer. Reapply it every two hours when outdoors, and sooner after swimming, sweating or towel drying. For outdoor work, physical protection such as long sleeves, shade breaks and a neck flap can be more dependable than sunscreen alone.

Avoid solariums completely. There is no safe tan from UV exposure, and a tan is a sign that skin has been damaged.

If you have noticed a suspicious spot, make the appointment now rather than adding it to a list for later. Early treatment is often simpler, and timely reassurance is valuable too. Skin Cancer Australia encourages Australians to treat a changing or non-healing lesion as a reason to book a professional skin check – because acting early gives you the best chance of a straightforward outcome.