Skin Cancer — Warning Signs

Australia has among the highest melanoma rates in the world.

• Every 30 minutes, someone is diagnosed with melanoma.
• Every six hours, someone dies from it.

That’s why recognising early warning signs and acting quickly is critical.

Summary
Check your skin regularly. Know the warning signs. Seek medical care early.

Types of Skin Cancer

• Basal cell carcinoma — slow-growing, rarely spreads
• Squamous cell carcinoma — can spread if untreated
• Melanoma — most dangerous, can spread rapidly

Warning Signs (ABCDE for moles)

• Asymmetry — uneven halves
• Border — irregular or jagged edges
• Colour — multiple colours or uneven tone
• Diameter — larger than 6mm
• Evolving — changes in size, shape, or colour

Other warning signs:

• New spots that look different from others (“ugly duckling” rule)
• Sores that don’t heal
• Red, scaly, or bleeding patches

FAQs

Q: Do darker skin tones get skin cancer?
A: Yes. Risk is lower, but cancers may be diagnosed later and at a more dangerous stage.

Q: How often should I check my skin?
A: Monthly self-checks, plus a yearly professional skin exam.

Q: When should I see a doctor?
A: Any time you notice a suspicious spot, a sore that won’t heal, or a mole that changes.

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⚠️ Skin cancer can be life-threatening if left untreated.
Always take new or changing skin spots seriously. Perform regular skin checks and see your doctor or dermatologist promptly.

References

• American Cancer Society — warning signs
• Cancer Council Australia — skin cancer signs

Related Guides

• Skin Cancer — Prevention
• Sunscreen Basics
• Cancer — Guide Hub