Skin Cancer — Warning Signs and Prevention

Skin cancer is one of the most common cancers worldwide, but early detection greatly improves outcomes.

Summary
Know the signs, check your skin regularly, and protect yourself from UV exposure.

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 edges
Colour — multiple colours or uneven tone
Diameter — larger than 6mm
Evolving — changes in size, shape, or colour

Prevention

Use SPF 30+ sunscreen daily
Wear hats and protective clothing
Avoid tanning beds
Seek shade during midday sun

FAQs

Q: Do darker skin tones get skin cancer?
A: Yes — though risk is lower, late detection is common.

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

Q: Is every mole a risk?
A: No — most moles are harmless. The key is noticing changes: new moles, or existing ones that change in shape, colour, or size. Use the ABCDE rule as a guide.

Q: When should I see a doctor?
A: Any time you notice a suspicious spot, sore that won’t heal, or a mole that changes. Early assessment by a GP or dermatologist can make all the difference.

Q: Can sunscreen really prevent skin cancer?
A: Yes — regular use of SPF 30+ sunscreen significantly lowers the risk of all major types of skin cancer, including melanoma.

⚠️ Skin cancer can be life-threatening if left untreated.
Always take new or changing skin spots seriously. Perform regular skin checks, protect yourself from UV, and see your doctor or dermatologist promptly if you notice warning signs.

References

American Cancer Society — skin cancer prevention and detection
Cancer Council Australia — sun safety guidelines

Cancer — Guide Hub