Moles
Dr Wong Su-Ni
Senior Consultant Dermatologist in Singapore
MBBS (Melbourne), MMed (Internal Med), MRCP (UK)FAMS (Dermatology), FRCP (London), GDA (Singapore)
Moles can be round, oval, flat, or raised. They can occur singly or in clusters on any part of the body. Most moles are brown, but colors can range from pinkish flesh tones to yellow, dark blue, or black. They may be present at birth, but most appear later.
Certain types of moles are more likely to develop into skin cancer:
- If you have a large congenital melanocytic naevus, there is a one in 20 risk that it may become cancerous. Smaller congenital naevi are less likely to develop cancerous change.
- Dysplastic naevi are more likely to progress into a malignant melanoma (a type of cancer).
- A - Asymmetry
- B - Border
- C - Colour
- D - Diameter
- E - E stands for EVOLVING; a mole or skin lesion that looks different from the rest or is changing in size, shape, or color, or starts to itch, bleed or ulcerate without any trauma.
For an accurate assessment, please contact Dr Wong Su-Ni at 6733 3629 or leave us a message here.
What Causes Moles?
The exact reasons why moles develop are not fully understood at present. However, many types seem to run in families, particularly dysplastic naevi. The likelihood of having lots of moles also seems to be inherited. You are more likely to have moles if you spend lots of time in the sun, especially if you have done so since childhood.
Moles can also appear because of changes in your hormones. This commonly occurs:
- during adolescence
- if you are taking the contraceptive pill
- during pregnancy
- during the menopause
It's a good idea to check your moles regularly so that you are aware if any of them change shape or colour. You should see a dermatologist if you notice:
- growth of an existing mole
- a mole with a ragged/uneven edge
- a mole of varying shades of colour
- a mole that bleeds, oozes or crusts
- a mole that feels painful or itches
- a mole where the two halves don't look the same
About Our Skin Specialist
Senior Consultant Dermatologist in Singapore
Dr Wong Su-Ni is an MOH-accredited dermatologist with over 20 years of experience and recognised expertise in both medical and aesthetic dermatology. Formerly Chief of the Psoriasis Unit at the National Skin Centre, she is widely respected for her clinical leadership in psoriasis care and laser-based dermatologic surgery. Beyond her clinical practice, she played a key role in shaping national psoriasis and acne treatment guidelines, reflecting her contribution to clinical standards and best practices.
Dr Wong is also an experienced researcher and educator, with publications in peer-reviewed journals and regular invitations to speak at local and regional dermatology meetings. Known for her thoughtful, evidence-based approach, she is trusted for managing complex skin conditions and advising on aesthetic treatments with care, precision and sound clinical judgement.
