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(4 Reviews)
Dr Colin Theng
MBBS, MRCP, MMED (Fam. Med), FAMS

The Skin Specialists & Laser Clinic

Mount Alvernia Medical Centre D 820 Thomson Road #07-61 Singapore 574623

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Overview

Dr Colin Theng is a highly-regarded, fully accredited dermatologist who has more than 20 years of clinical experience. An accomplished skin specialist, he is a frequent invited speaker at meetings and conferences on both the local and international stage. As a key opinion leader in the areas of psoriasis, biologic treatments, eczema, phototherapy and sun-related skin disorders, Dr Theng has served on many advisory boards and workgroups in his fields of expertise. Above all, Dr Theng is a friendly and caring doctor who believes in delivering excellent patient care and this is evidenced by the numerous service awards he has received, including the Healthcare Humanitarian award for his community work.

Dr Theng graduated from the National University of Singapore in 1995 and went on to complete his training in family medicine, receiving his Masters in Family Medicine from NUS and Member of the Royal College of Physicians (MRCP) UK. Dr Theng completed his dermatology training at the National Skin Centre and was a recipient of the Health Manpower Development Plan award (HMDP) to further his training in dermatology at Hope Hospital, Manchester in the UK, where he subspecialized in the areas of phototherapy, photodermatology and psoriasis. Through his training, he has garnered extensive experience in treating both Asian and Caucasian skin types.

Dr Theng is grateful for the privilege to serve as a doctor and believes in giving his patients professional, yet individualized and personal care. He upholds the highest ethical standards in the treatment of his patients. Often described as a patient, friendly and caring doctor, you can certainly trust Dr Theng to do his best for you. In his spare time, Dr Theng enjoys spending time with his lovely wife Merlene and 3 children. He loves sports like tennis and table tennis and still plays tennis at a social and competitive level. Singing and performing is also his passion, and he actively participates in his church musicals and outreach programmes.

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2017
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2017
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2017
Education
  • MBBS 
  • MRCP
  • MMED (Fam. Med)
  • FAMS
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26 Nov 2017
My first aesthetic experience with Dr Colin Theng was excellent. He is really friendly, patient, and caring towards his staff and me as his patient. His professionalism is commendable by giving precise and appropriate treatment and advice to satisfy all aspects of my needs. The outcome was marvelou...
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3 Dec 2017
Dr Colin Theng is a very caring and friendly person and i feel very comfortable being treated by him for my acne scars and oily skin conditions. I have been seeing Dr Colin Theng for my acne scars and he has been treating me using the laser treatment. I have also done a few botox treatment under hi...
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15 Nov 2017
Dr Colin Theng is extremly friendly and caring. I have been visiting him for laser treatment to remove the pimple scars on my face as well as botox treatment. He has been very patient and is experienced in the procedures. The end results are very satisfactory and i strongly recommend him to others ...
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26 Oct 2017
I have been seeing Dr Colin for dermatological problems for several years since his years in NSC and when he started his private practice. Other than his strong credentials and depth of experience in dermatology, I find his passion and concern for patients more admirable. He has ...
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5 MOST COMMON TRAVEL-RELATED SKIN CONDITIONS SEEN BY A DERMATOLOGIST (#4 WILL CREEP YOU OUT)

We all love travelling, and I for one love beach holidays and hiking off the beaten track.

There are many things Singaporeans love to bring back from our travels, but a bad skin rash is certainly not one of them.

Bedbugs were all over the news headlines recently, with Scoot and Singapore Airlines passengers complaining of being bitten during their flights. Unfortunately, bed bug bites are just one of the skin conditions that I often see in returning travellers.

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COMPLETE GUIDE TO STD TESTS IN SINGAPORE (2018)

You've finally decided to settle down, but want to be sure that you are free of sexually transmitted infections. What should you do, and where do you turn to?

STD screening is important, as it prevents the spread of disease to others. Many STDs are treatable.

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Not the question you're looking for? Browse other questions tagged Acne & Scars Aesthetic Medicine Skin, Hair & Nails Hair Loss or ask your own question now FOR FREE.
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Dear Samantha, Yes, melanomas can arise from pre-existing moles, so we do have to vigilant to detect any changes in the moles. As you have rightly pointed out, changes in the size and in the colour of the moles and important signs to look out for in a changing mole. Melanomas...
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Hi, When you apply wrong products on the face, you can develop a contact dermatitis. Contact dermatitis can be due to irritation from harsh products and this is termed irritant contact dermatitis. It can be due to an allergic reaction to ingredients in a product, and this is ter...
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Hi Michelle, This depends on the type of face mask you are using. Even among hydrating face masks, there are many different types with different ingredients. In acne prone skin, we should use products that are non-comedogenic and oil free so that they do not clog the pores. S...
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Dear Andrea, Thank you for the question. In general, we worry about a mole when it shows the following features: 1. Asymmetry 2. Borders are irregular 3. Colour is variegate or uneven 4. Diameter >0.6m 5. Evolution - the mole is enlarging or bleeding If ...
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Dear Tong Mei, Thank you for your question. Firstly, it is important to make the correct diagnosis as itchy spots on the back can be due to a number of causes including fungal infection, eczema and psoriasis. Conditions like eczema can be recurrent. If a fungal infection is s...
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Dear Yuvarani, Dryness of the hands and feet since birth is uncommon. This may be due to an underlying condition like ichthyosis where there is a defect in the skin's natural moisturiser production, resulting in skin dryness and peeling. Hand and feet eczema and other c...
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Dear Bluvelvet, From the photo, there is no obvious lump seen. This lump is like to be located deeper beneath the skin. Some possibilities include an underlying cyst, swelling of the tendon sheath, or ganglion. It is advisable for you to see your doctor for a closer examinat...
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Dear Kurai, In general, after an insect bite, it is important to minimize picking and scratching at the rash as this can aggravate the swelling and increase the risk of scarring. It is also important to prevent infection and keep the area clean. Topical antibiotics may be hel...
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Hi Sab, Thanks for your question. Cold urticaria is an uncommon form of urticaria or hives where the rash is triggered by a cold stimulus. Cold urticaria is often idiopathic ie. the cause is unknown. However, in rare cases, this can be associated with underlying diseases incl...
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Hi Drifter, With unprotected oral sex, there is a risk of transmission of STDs, particularly for infections like gonorrhoea and herpes simplex virus (HSV). The throat can harbour the bacteria that causes gonorrhoea and this can spread through unprotected oral sex. For HSV inf...
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Not the question you're looking for? Browse other questions tagged Acne & Scars Aesthetic Medicine Skin, Hair & Nails Hair Loss or ask your own question now FOR FREE.
Sort by:
Hi, When you apply wrong products on the face, you can develop a contact dermatitis. Contact dermatitis can be due to irritation from harsh products and this is termed irritant contact dermatitis. It can be due to an allergic reaction to ingredients in a product, and this is ter...
Consult Doctor
Dear Bluvelvet, From the photo, there is no obvious lump seen. This lump is like to be located deeper beneath the skin. Some possibilities include an underlying cyst, swelling of the tendon sheath, or ganglion. It is advisable for you to see your doctor for a closer examinat...
Consult Doctor
Dear Yuvarani, Dryness of the hands and feet since birth is uncommon. This may be due to an underlying condition like ichthyosis where there is a defect in the skin's natural moisturiser production, resulting in skin dryness and peeling. Hand and feet eczema and other c...
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Dear Zoey, Insect bite reactions are due to hypersensitivity response of the body to the insect bites. The area of the bites gets progressively redder,inflamed and itchy and the inflammation response can be very intense and severe at times, even leading to the development of blis...
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Dear Nightsky, For acne scars and large pores, there are various treatments than can be used including chemical peels and laser treatments. The fractional laser is good treatment option for depressed scars. Usually 3 to 4 sessions may be required and the expected improvement ...
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Dear Terilyn, An epidermal naevus is due to excessive growth of the cells in the epidermis (top layer of the skin). It often has a linear pattern and occurs from childhood. This is a benign condition and is not cancerous. Treatment of epidermal naevus is mainly by surgical ex...
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Dear Shakila, For the treatment of hives or urticaria, antihistamines are the Mainstay of treatment. Sometimes, we do need higher doses of antihistamine to get the urticaria under control. Oral steroids can help control urticaria, but they are not an ideal long-term treatment ...
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Hi Nur Azmina, From the picture, this bump maybe a dermatofibroma or even an early scar. You should see your doctor/dermatologist to get this more closely examined for a proper diagnosis to be made. A dermatofibroma is a benign growth on the skin. This is not cancerous. Tr...
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Dear JT, Unfortunately, the swelling is not very obvious from the clinical photograph. I think for a proper diagnosis, you should get this checked out by your doctor. Some comon causes of swelling around the wrist include a ganglion. But you will require a close examination t...
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Dear Jasleen, Sorry to hear about the bad flare of your rashes. The rash does appear to be like eczema and it is rather extensive, so I would advice that you see a doctor or dermatologist to get a proper assessment of the rash to determine the cause of the rash and management. ...
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Dear Strypie, When your child develops a sudden onset of hive, this is termed as acute urticaria. There are many possible triggers of hives, including viral infection, foods, medications etc. With the history of preceding cough and cold, a viral trigger is possibility. Anti-hi...
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Hi, We usually would advice applying steroid creams till the rash has cleared. When the rash resolves, it may leave a brownish pigmentation and this is termed post-inflammatory hyperpigmentation. This pigmentation will gradually resolve on it own. You should stop the topical ste...
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Dear Elaine, There are a few causes of blisters on the limbs. These include: 1. Skin infection for example bullous impetigo, 2. Bullous insect bite reactions 3. Skin trauma eg Burns. I would advice you to see your doctor or dermatologist. Your doctor will need to go...
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Hi Pam, I think it is advisable for you to see your doctor/dermatologist to get these bumps assessed as the doctor will need to palpate and examine the bumps more closely in ordered to make an accurate diagnosis. There may be underlying cysts as these may have whitish contents...
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Dear Afiqah, It is difficult to be sure from the photo what the cause of your rash is. A possible diagnosis is facial eczema. Often times, if the rash is persistent, there may be a triggering factor or aggravating factor. This includes contact with products that are too harsh ...
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Dear Remy, For the treatment of inflamed or eczematous skin, topical steroids is a good treatment option. Topical steroid creams, however, can cause thinning of the skin and skin atrophy and if this is present, then you may have to consider reducing the strength or stopping the ...
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Dear Joey, Thank you for your question. It is difficult to tell clearly from the photograph, but it does appear that there may be some vascular proliferation of blood vessel beneath the blister. There may be an underlying pyogenic granuloma that needs to be treated. Simple tr...
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Hi, From the photo, it does look like this might be eczema. Some simple steps that you can do to try to improve the condition include: 1. avoid scratching the area. This is very important as scratching worsens the condition. 2 apply moisturizers regularly 3. use gentle s...
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Dear Erica, There are a few different causes of itchy bumps on the legs. These include insect bite reactions, prurigo nodularis, folliculitis and papular eczema. It would be advisable for you to see your doctor/dermatologist to confirm the diagnosis. With a thorough history ...
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Hi, It must be difficult to cope with the itch and scarring. The bumps do look quite extensive on the shin. You are correct in recognizing that the constant scratching and picking at the lesions is causing it to worsen. It is important for you to refrain from doing this as far...
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Dear Angeline, It is hard to be certain from the photo as this needs to examined a bit more closely to be able to be more certain of the diagnosis. Some causes of small tiny bumps on the finger includes dyshidrotic eczema. This is a form of eczema that presents with recurrent ...
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Dear Ryan, Common causes of recurrent rashes include hives or urticaria. Theses rashes usually appear and lasts for minutes to hours before they resolves. Urticaria is generally classified as acute or chronic urticaria based on the duration of the rash. If it is less than 6 w...
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Dear HSE, There are many possible causes of brownish spots on the legs and arms. Some common causes include chronic eczema, lichen amyloidosis and venous stasis. If the rash is continuing to spread despite the use of moisturizers, it would be good for you to see your dermatol...
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Dear Sabrina, Hives, also known as urticaria, presents with a rash that is itchy and often appears like a giant mosquito bite. Typical hives do usually appear and settle within minutes to hours. The appearance of hives is not specific, and there are a number of skin disorders tha...
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Peeling of the hands and feet after hand foot and mouth disease is quite common. This usually occurs after 1 to 2 weeks of the infection. You should use moisturizers regularly on your hands and feet, and minimize contact with harsh soaps and detergents in the meantime. The sk...
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Thank you for the question. Cherry aniogmas are small growths or proliferation of blood vessels. They do appear as you grow older, and is more common in the elderly. However, it is not uncommon to have a few lesions at an earlier age. Some people are more prone to developing ...
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Dear Gina, Thank you for the question. The small bumps on the forehead do look like clogged follicles or comedones. There are prescription medicines such as tretinoin cream that can help to clear and control these bumps. Treatments like chemical peels may also help to speed up...
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Dear Clylotte, Thank you for the question. A common cause of progressive thin ning of the hair includes female pattern hairloss. Scalp dermatitis can cause the scalp to be itchy and painful. You can see your doctor or dermatologist for assessment and treatment of your hair proble...
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Dear Jt, Thank you for the question. The circular patch can go for a patch of eczema. This is often aggravated by scratching and I think it would be advisable to tell your brother to refrain from scratching. Applying moisturizers to the area also helps the eczema. Eczema also ...
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Dear Ali, Thank you for the question. It is difficult to be sure from the clinical photos and you should visit your doctor/dermatologist for a thorough history and physical examination for a proper diagnosis. Some possibilities include pityriasis rosea, secondary syhilis and v...
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Dear Yuwen, Thank you for the question. It is unusual to get a large pimple at this location. If it is red and painful, an insect bite is possible but an underlying infection or infected cyst is also possible. If the pain is still present, you should see your doctor or dermato...
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Dear Ray, Thank you for the question. It does seem that these lumps arise from deeper in the skin. The doctor will have to examine and palpate/feel the bumps for a proper assessment. In some cases, a skin biopsy may be needed to confirm the diagnosis. I do think that you...
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Dear Wot, Thank you for your question. Common causes of white scaly patches on the thighs and limbs include fungal infection and eczema. It is important to make the correct diagnosis as the treatment for the 2 conditions are very different. You seem to have tried the anti-fung...
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Hi, Thank you for the question. For male pattern hair loss, early treatment is important as it prevent further progression of the hair loss. Treatments like topical minoxidil and oral finasteride can help too prevent further hair loss, and in many cases, there can be new hair gro...
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Dear AZ, Thank you for the question. For protruding moles, they can be removed by surgical excision or shave excision. Laser ablation of a large protruding mole is a less preferred option.This is usually done under local anesthetic. You can see your dermatologist/doctor to ...
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Dear AC, Thanks for question. There are various causes of pigmentation on the back. Some common causes include eczema with most inflammatory hyperpigmentation and other pigmentary disorders. I think that it would be good to see your doctor/dermatologist for an ex...
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Dear Elizabeth, Thanks for the question. Hives or urticaria are rashes that come and go. They are often red and raised and itchy and settles within hours. If the hives last for more than 6 weeks, this is considered to be chronic urticaria. In chronic urticaria, you may consid...
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Hi Lffa, Thank you for the question. There are a number of treatments for treating acne. Simple over the counter medications like benzoyl peroxide can be helpful. However, I do note that you have quite a bit of inflammatory acne on your face. If the acne is persistent and rec...
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Dear JN, Thank you for the question. The photo of the rash can go for eczema. The rash in eczema is usually itchy, and aggravated by scratching. Persistent scratching or reaction to certain creams applied can cause the rash to be recurrent or persistent, so your mother s...
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Hi Lee Ling, Thank you for your question. The separation of the nail from the nail bed is called onycholysis. There are many causes of onycholysis. These include trauma, underlying medical problems such as thyroid disorders and psoriasis, certain oral medications and infe...
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Hi, thanks for the question. Solar lentigines are common in people who have had a lot of sun exposure. This type of pigmentation responds well to laser treatment. The best treatment option is the pigment laser. There will be redness and scabbing after the laser and the downtime ...
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Dear JT, Thanks for the question. The pus formed in acne is due to the body's inflammatory response to bacteria and clogged pores. It is not due to toxins accumulated in the body. Niacinamide may have some anti-inflammatory effects, and some over the counter preparations like...
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