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

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, 2018
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2017, 2018
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2017, 2018
Education
  • MBBS 
  • MRCP
  • MMED (Fam. Med)
  • FAMS
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26 Nov 2017 | Report
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 | Report
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 | Report
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 | Report
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.

1131 views 22 Aug 2017

Complete Guide To STD Tests In Singapore (2019)

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.

6952 views 1 Aug 2017

Ask Dr Colin Theng: Psoriasis

Psoriasis is a chronic, inflammatory skin disease. While the causes and risk factors are still unknown, researchers believe the two main culprits are your genes and your environment. 

Currently, there is no cure for psoriasis, but there are treatments to help relieve symptoms.

Learn more about this chronic and unpredictable disease from Dr Colin Theng, as he hosts a QnA session where he answers all your questions. 

283 views 11 Oct 2018

The Best Ways To Treat And Manage Psoriasis; Explained By A S'porean Dermatologist

In recent years, there has been an increasing demand for dermatology services at Singapore's National Skin Centre (NSC). One of the top 10 skin diseases treated at NSC is Psoriasis; a condition affects approximately 1-2% of the population in Singapore. 

Psoriasis is a chronic, non-contagious skin condition that occurs when your skin cells multiply and are replaced too quickly. Often, it is accompanied by inflammation. As a result, the condition appears as red scaly patches.

DxD invited Dr Colin Theng, a fully accredited dematologist and the president of Psoriasis Association of Singapore (PAS), to answer readers' questions on the causes and treatment options for psoriasis. 

173 views 21 Dec 2018
Thanks for the question. Seborrhoeic keratosis is a benign growth and it usually appears with age. Seborrhoeic keratosis can be removed by electrosurgical ablation. A local anaesthetic injection is given before the procedure to minimize the pain. For smaller lesions, a numbing cr...
16 Jan 2019
Hi, Thank you for the question. RPR or Rapid Plasma Reagent can be positive in other conditions besides syphilis. These include chronic liver disease, pregnancy, intravenous drug abuse, lupus and other viral and bacterial infections If you have both RPR and TPPA reactive, then...
7 Jan 2019
Thank you for the question. The risk of catching HIV is highest if you have multiple sexual partners and practice unprotected sex. The risk of transmission is higher through vaginal and anal sex and is lower with oral sex. HIV can also be transmitted through blood and blood prod...
7 Jan 2019
Hi, Thanks for the question. It does sound like you may have developed an allergic reaction to the plaster, resulting in the rash. This is likely to be due to an allergic contact dermatitis to the plaster. It is great to know that the rash has resolved. However, the skin infla...
29 Dec 2018
Hi, there are many possible causes of hair loss. Male pattern hair loss can certainly start at age 23. Often there is a family history of hair loss and there is gradual thinning of the hair, mainly over the front and top of the scalp, while the hairs on the sides are spared. Ther...
24 Dec 2018
Hi, There are various reasons why a wound does not heal properly. Infection of the wound is a common reason for poor wound healing. Sometimes, infection by atypical bacteria can also cause poor wound healing. Other causes include recurrent trauma, poor vascular circulation a...
14 Dec 2018
Dear Shahidah, Thank you for your question. There are various causes of itchy bumpy rashes and these include eczema, bite reaction and scabies. Heat and sweat can aggravate eczema and make the skin more itchy. Excessive scratching can also make the rash worse. However, if t...
28 Nov 2018
Hi, Sweaty palms can indeed be frustrating as it can interfere with daily activities. There are a few treatment options. The simplest method is to use anti-pespirants containing aluminium salts. Another option is iontophoreresis. This involves soaking the hands in water or ...
28 Nov 2018
Thanks for the question. If you develop rash over the bracelet area, it is possible that you may have an allergy to the material of the bracelet e.g. nickel, leather etc. This is called an allergic contact dermatitis. A way to determine if you have a contact allergy is to do a...
28 Nov 2018
Dear Tiffany, Urticaria or hives is a fairly common skin condition. Most cases of urticaria are acute and they may appear for days to weeks and settle within 6 weeks. In some cases, the urticaria can be more persistent and last beyond 6 weeks. This is termed as chronic urticar...
21 Nov 2018
1 2 3 4 5 6 7 8 9 10 ... Next
Thanks for the question. Seborrhoeic keratosis is a benign growth and it usually appears with age. Seborrhoeic keratosis can be removed by electrosurgical ablation. A local anaesthetic injection is given before the procedure to minimize the pain. For smaller lesions, a numbing cr...
16 Jan 2019
Hi, Thank you for the question. RPR or Rapid Plasma Reagent can be positive in other conditions besides syphilis. These include chronic liver disease, pregnancy, intravenous drug abuse, lupus and other viral and bacterial infections If you have both RPR and TPPA reactive, then...
7 Jan 2019
Dear Shahidah, Thank you for your question. There are various causes of itchy bumpy rashes and these include eczema, bite reaction and scabies. Heat and sweat can aggravate eczema and make the skin more itchy. Excessive scratching can also make the rash worse. However, if t...
28 Nov 2018
Thanks for the question. If you develop rash over the bracelet area, it is possible that you may have an allergy to the material of the bracelet e.g. nickel, leather etc. This is called an allergic contact dermatitis. A way to determine if you have a contact allergy is to do a...
28 Nov 2018
Dear OP, Thanks for the question. Common causes for dry and flaky skin on the feet include feet eczema and fungal infection. For feet eczema, washing the feet with a gentle cleanser and moisturizing it regularly with a good moisturizer will be helpful. If persistent, applyin...
21 Nov 2018
Dear Megan, Thanks for the question. In general, people do outgrow their acne, but about 20% may have acne that persist in adulthood. I do think that it is important to treat acne as it will improve an individual's appearance and self-confidence. Another important reason to t...
16 Nov 2018
Dear Cm Thank you for the question. From the photo, it does appear that you have multiple bumps on nodules on the forearms. These are likely to be due to multiple cysts or lipomas, which are abnormal proliferation of fat tissue. Some individuals may be genetically prone to de...
15 Nov 2018
Dear Jan, Thanks for the question. It is difficult to be sure of the diagnosis from the photo. A solitary red patch can be due to a number of different causes including eczema, skin infection and even a drug eruption. If this is still persistent, it would be good to see your...
15 Nov 2018
Dear Ms Goh, It is certainly possible to develop a keloid at the site of a laproscopic wound. Keloids can occur at almost any site where there is an injury but there are some sites which are more keloid prone, and these include the chest, back, jawline and earlobe. A keloid ...
30 Oct 2018
Dear Min Yee, It is common for a traumatic injury to the nail to result in a blood clot under the nail. This can lead to a separation of the nail from the nail bed and cause the nail to detach. The new nail will usually grow out gradually but nail growth is very slow and it ...
25 Oct 2018
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...
12 Sep 2018
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...
1 Sep 2018
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...
2 Sep 2018
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...
21 Aug 2018
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 ...
19 Aug 2018
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...
13 Aug 2018
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 ...
6 Aug 2018
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...
6 Aug 2018
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...
6 Aug 2018
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. ...
26 Jul 2018
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...
27 Jul 2018
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...
4 Jul 2018
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...
27 Jun 2018
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...
21 Jun 2018
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 ...
21 Jun 2018
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 ...
18 Jun 2018
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...
18 Jun 2018
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...
21 Jun 2018
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 ...
7 Jun 2018
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...
7 Jun 2018
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 ...
2 Jun 2018
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...
2 Jun 2018
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...
24 May 2018
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...
21 May 2018
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...
4 May 2018
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 ...
19 Apr 2018
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...
14 Apr 2018
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...
14 Apr 2018
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 ...
14 Apr 2018
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...
8 Apr 2018
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...
8 Apr 2018
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...
2 Apr 2018
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...
2 Apr 2018
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...
19 Mar 2018
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 ...
17 Mar 2018
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...
15 Mar 2018
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...
28 Feb 2018
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...
27 Feb 2018
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...
26 Feb 2018
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...
26 Feb 2018
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 ...
24 Feb 2018
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...
15 Feb 2018