Is this mole normal? How to spot worrying skin changes after sun exposure
After a sunny holiday or long summer outdoors, many people start to notice new freckles, moles or changes in their skin. Most of the time, these are harmless – but sometimes, they can be a sign of something more serious. Here’s what to watch out for, and when it’s best to book a mole check.
- What to look for – and when to see a dermatologist
Author: Dr. Daniel Sørli
Date: 03.06.2025
Why sun exposure matters
Ultraviolet (UV) rays from the sun can damage your skin, even on cloudy days. Repeated sun exposure increases your risk of developing abnormal moles or skin cancer over time. The good news? Early detection makes all the difference.
How to check a mole: the ABCDE rule
Dermatologists use this simple rule to help spot potential warning signs:
- A – Asymmetry: one half of the mole doesn’t match the other
- B – Border: edges are irregular, blurred, or jagged
- C – Colour: uneven shades of brown, black, red, white or blue
- D – Diameter: larger than 6mm (about the size of a pencil eraser)
- E – Evolving: changing in size, shape, colour or starting to itch or bleed
If you notice any of these signs, it’s worth getting it checked.
New or changing moles after summer?
It’s common to notice changes in your skin after a beach holiday, festival or city break – especially on areas like your shoulders, chest, face or back. Don’t panic, but do monitor them. If you’re unsure, book a mole check for peace of mind.
When to see a dermatologist
If a mole:
- looks different to others on your body
- has changed noticeably in recent weeks
- feels itchy, painful or bleeds
...you should have it assessed by a professional.
At Dr.Dropin Fulham, our experienced dermatologists offer same-day mole checks and expert advice. If needed, we’ll arrange a biopsy or further care quickly.
Protecting your skin going forward
- Apply SPF 30+ every day during summer (yes, even in the UK!)
- Avoid sunbeds – they significantly increase your risk of melanoma
- Wear hats, sunglasses and cover up during peak sun hours (11am–3pm)
🔎 Worried about a mole? Book a dermatology consultation with Dr.Dropin today.