Allergy
Dr Wong Su-Ni
Senior Consultant Dermatologist in Singapore
MBBS (Melbourne), MMed (Internal Med), MRCP (UK)FAMS (Dermatology), FRCP (London), GDA (Singapore)
The allergen may be taken in internally (e.g. food, drugs, airborne allergens), or may be from external contact (e.g. fragrance, rubber latex, bonesetter’s herbs) -- the rash that then develops is known as allergic contact dermatitis.
What causes allergies?
Both genetics and environmental factors play a role.
In a person with allergies, the immune response is oversensitive. When it recognizes an allergen, it releases chemicals, such as histamines. This causes itching, swelling, mucus production, muscle spasms, hives, rashes, and other symptoms, which vary from person to person.
Common allergens include pollen, mould, pet dander, and house dust mites. Food and drug allergies are common. Allergic skin reactions can also be caused by insect bites, fragrances, costume jewellery, cosmetics, and other substances.
Treatment for allergies
Most allergies can be easily treated with medication and avoidance. The best way to reduce symptoms is to try and avoid what causes your allergies in the first place. This is especially important for food and drug allergies. Allergy tests (e.g. patch test, blood tests) are available to help confirm some suspected allergies.
There are several types of medications available to prevent and treat allergies. Your doctor will recommend suitable medications depend on the type and severity of your symptoms, your age, and overall health.
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.
