2.Updated consensus guidelines for management of moderate-to-severe atopic dermatitis in Singapore: Integrating biologics, Janus kinase inhibitors and conventional therapies.
Yik Weng YEW ; Uma ALAGAPPAN ; Derrick AW ; Nisha Suyien CHANDRAN ; Karen Jl CHOO ; Roland CHU ; Hong Yi KOH ; Mark Jean Aan KOH ; Shan Xian LEE ; Ching Yin NEOH ; Siyun Lucinda TAN ; Mark TANG ; Yong-Kwang TAY ; Seth FRANCIS-GRAHAM ; Andrew LIM ; Haur Yueh LEE
Annals of the Academy of Medicine, Singapore 2024;53(11):670-682
INTRODUCTION:
Since 2016, several therapies have been approved for treating atopic dermatitis (AD) in Singapore, including biologics, oral Janus kinase (JAK) inhibitors and topical crisaborole. This study supplements the 2016 Singapore treatment guidelines for AD, focusing on newer therapies for moderate-to-severe disease, while revisiting older treatment regimens to accommodate changes in knowledge and practice.
METHOD:
A modified Delphi panel was held, led by 2 co-chairs. The voting expert panel consisted of 12 dermatologists experienced in managing AD in Singapore. Delphi survey rounds were conducted between 24 July and 27 October 2023. Panellists indicated their agreement with drafted statements using a 5-point Likert scale. Consensus was defined as ≥80% agreement. An expert meeting was held to facilitate the consensus process between rounds 1 and 2 of voting.
RESULTS:
All expert panellists participated in both survey rounds, with a 100% response rate. Thirty-nine statements, classified into general principles, conventional treatments, biologics and JAK inhibitors, were proposed. Of these, 27 statements reached consensus at the end of round 1. After the expert meeting, 17 statements were included in round 2, of which 16 statements reached consensus. One statement did not reach consensus. Key updates are the inclusion of dupilumab and JAK inhibitors as potential first-line treatments for moderate-to-severe AD, in certain populations.
CONCLUSION
This modified Delphi study generated consensus among Singapore dermatology experts, to update treatment guidelines in moderate-to-severe atopic dermatitis. The consensus statements developed are intended to supplement the 2016 Singapore treatment guidelines for AD. Further revisions may be required when new evidence and/or treatments become available.
Dermatitis, Atopic/drug therapy*
;
Humans
;
Singapore
;
Janus Kinase Inhibitors/therapeutic use*
;
Biological Products/therapeutic use*
;
Delphi Technique
;
Consensus
;
Antibodies, Monoclonal, Humanized/therapeutic use*
;
Severity of Illness Index
;
Bridged Bicyclo Compounds, Heterocyclic/therapeutic use*
;
Dermatologic Agents/therapeutic use*
;
Practice Guidelines as Topic
;
Pyrimidines/therapeutic use*
;
Boron Compounds
3.Lamotrigine-induced Stevens-Johnson syndrome and toxic epidermal necrolysis in Singapore: A case series.
Laura L Y HUI ; Celine LOKE ; Derrick C W AW ; Liesbet TAN ; Lie Michael George LIMENTA ; Meixin SHEN ; Ee Chee REN ; Dorothy S L TOH ; Edmund Jon Deoon LEE ; Shiu Ming PANG
Annals of the Academy of Medicine, Singapore 2021;50(12):915-918
4.Management of scabies.
Farhad Fakhrudin VASANWALA ; Chong Yau ONG ; Chen Wee Derrick AW ; Choon How HOW
Singapore medical journal 2019;60(6):281-285
Scabies is a common infestation worldwide, affecting persons of any age and socioeconomic status. In Singapore, it is more common in institutions rather than in homes. The two variants are classic scabies and crusted scabies, with the latter having a significantly higher mite burden. Early identification, isolation of index patients and prophylactic treatment of contacts are essential in dealing with the outbreak. Locally, most primary care practitioners make the diagnosis based on visual inspection and clinical examination. A skin scrape is done to confirm the diagnosis, especially in atypical presentations. Scabietic mites, eggs or faeces can be seen on microscopy. The usual treatment for adult scabies in Singapore is the use of topical malathion or permethrin. A combination of topical permethrin and oral ivermectin is used for crusted scabies.
5.Economic Burden of the Inadequate Management of Allergic Rhinitis and Urticaria in Asian Countries Based on the GA²LEN Model.
Kanokvalai KULTHANAN ; Supinda CHUSAKUL ; Marysia Tiongco RECTO ; Ma Teresita GABRIEL ; Derrick Chen-Wee AW ; Narayanan PREPAGERAN ; Alson WONG ; Jern Lin LEONG ; Henry FOONG ; Vo Thanh QUANG ; Torsten ZUBERBIER
Allergy, Asthma & Immunology Research 2018;10(4):370-378
PURPOSE: Across Hong Kong, Malaysia, the Philippines, Singapore, Thailand and Vietnam, (referred to as Asia) approximately 30–53 million individuals of the 151 million employed suffer from allergic rhinitis (AR) and urticaria. It is estimated that approximately 90% of patients with these allergic conditions are insufficiently treated, impacting the socioeconomic burden in terms of absence from work and decreased productivity. This study aims to estimate the socioeconomic burden of allergies in Asia and the cost savings that their adequate management can provide. Due to the limited availability of regional data, this study focused AR and urticaria in selected countries. METHODS: Published literature, information from statistical bureaus, clinician surveys and extrapolation of selected data from the European Union were used to determine the socioeconomic costs of AR and urticaria. RESULTS: Many patients in Asia suffer from perennial allergies and experience symptoms of AR and urticaria for up to 298 days per year. An estimate of the indirect costs of patients insufficiently treated for AR and urticaria amounts to USD 105.4 billion a year, which equates to USD 1,137–2,195 per patient due to absenteeism and presenteeism. Adherence to guideline-approved treatment can lead to estimated savings of up to USD 104 billion. CONCLUSIONS: The current study suggests that within Asia, the socioeconomic impact of AR and urticaria is similar to that seen in the European Union in spite of the lower wages in Asia. This is due to the mainly perennial allergens prevailing in Asia, whereas the sensitization patterns observed in the European Union are dominated by seasonal exposure to pollen. These results underline the need for governmental initiatives to increase public awareness on the prevention and treatment of these and other allergic diseases as well as greater research funding and large-scale studies to reduce their growing socioeconomic burden in coming years.
Absenteeism
;
Allergens
;
Asia
;
Asian Continental Ancestry Group*
;
Cost Savings
;
Efficiency
;
European Union
;
Financial Management
;
Hong Kong
;
Humans
;
Hypersensitivity
;
Income
;
Malaysia
;
Philippines
;
Pollen
;
Presenteeism
;
Rhinitis, Allergic*
;
Salaries and Fringe Benefits
;
Seasons
;
Singapore
;
Thailand
;
Urticaria*
;
Vietnam
6.Severe Cutaneous Adverse Reactions Following Intravenous Contrast: A Report of 2 Cases.
Sam Sy YANG ; Derrick Cw AW ; Nisha S CHANDRAN
Annals of the Academy of Medicine, Singapore 2015;44(12):561-564
Aortic Aneurysm, Thoracic
;
complications
;
diagnostic imaging
;
Aortography
;
Contrast Media
;
adverse effects
;
Coronary Artery Bypass
;
Cross Infection
;
diagnostic imaging
;
Fatal Outcome
;
Female
;
Humans
;
Iohexol
;
adverse effects
;
Kidney Failure, Chronic
;
complications
;
Male
;
Middle Aged
;
Postoperative Complications
;
diagnostic imaging
;
ST Elevation Myocardial Infarction
;
surgery
;
Sepsis
;
etiology
;
Stevens-Johnson Syndrome
;
etiology
;
Surgical Wound Dehiscence
;
diagnostic imaging
;
Tomography, X-Ray Computed
7.A study of treatment adherence and quality of life among adults with chronic urticaria in Singapore
Jun Khee HENG ; Li Jia KOH ; Matthias Paul Han Sim TOH ; Derrick Chen Wee AW
Asia Pacific Allergy 2015;5(4):197-202
BACKGROUND: Chronic urticaria is a common skin condition that causes significant impact on patient's quality of life. OBJECTIVE: The purpose of the study was to assess adherence to therapy and quality of life of patients with chronic urticaria. We also aimed to study the relationship of medication adherence and quality of life of patients with chronic urticaria. METHODS: A cross sectional study was conducted with 103 patients from the dermatology clinic of National University Hospital, Singapore. Patients with chronic urticaria were asked to fill out a questionnaire for assessment of adherence to therapy and quality of life. We used the Morisky 8-Item Medication Adherence Scale to categorize adherence as high, medium, low. For assessment of quality of life, we used the validated chronic urticaria quality of life questionnaire (CU-Q2oL) by Bairadani et al. RESULTS: The highest median scores for the items measuring quality of life were interference with sleep and pruritus. We also observed that the majority of patients (71.9%) had low adherence to medical therapy. No difference in adherence was noted in patients on once daily medication or more frequent dosing. There was no significant difference in the quality of life among patients with low and medium adherence to therapy. CONCLUSION: Quality of life of patients with chronic urticaria does not depend on the patients' adherence to medications. Dosing frequency does not affect adherence in our study population. It is also important to recognize the symptoms and issues most affecting quality of life of patients with chronic urticaria, so as to improve overall management.
Adult
;
Dermatology
;
Humans
;
Medication Adherence
;
Pruritus
;
Quality of Life
;
Singapore
;
Skin
;
Urticaria
8.A Double-Blind, Randomised, Placebo-Controlled Trial of EMLA® Cream (Eutectic Lidocaine/Prilocaine Cream) for Analgesia Prior to Cryotherapy of Plantar Warts in Adults.
Siew Hui LEE ; Janthorn PAKDEETHAI ; Matthias P H S TOH ; Derrick C W AW
Annals of the Academy of Medicine, Singapore 2014;43(10):511-514
INTRODUCTIONCryotherapy with liquid nitrogen is an effective, safe and convenient form of treatment for plantar warts. EMLA® cream (eutectic mixture of lidocaine 2.5% and prilocaine 2.5%) is a topical local anaesthetic agent that has proven to be effective and well tolerated in the relief of pain associated with various minor interventions in numerous clinical settings.
MATERIALS AND METHODSIn a single-centre, double-blind, randomised placebo-controlled study, 64 subjects were randomised into 2 groups. The subjects had a thick layer of EMLA® cream or placebo cream applied to pared plantar wart(s) and onto the surrounding margin of 1 mm to 2 mm under occlusion for 60 minutes prior to receiving cryotherapy. The pain of cryotherapy was evaluated by the subjects using a self-administered Visual Analogue Scale (VAS) immediately after the cryotherapy.
RESULTSThere was no statistical difference between the mean VAS score for EMLA® cream (47.0 ± 21.4 mm) and placebo (48.9 ± 22.0 mm). Those with more than 1 wart had a significantly higher VAS score than those with only 1 wart (59.1 ± 21.8 vs. 44.3 ± 20.4, P <0.05) but this did not affect the therapeutic effect of EMLA® cream prior to cryotherapy.
CONCLUSIONWe conclude that the application of EMLA® cream prior to cryotherapy does not reduce the pain associated with cryotherapy.
Adult ; Analgesia ; Anesthetics, Local ; therapeutic use ; Cryotherapy ; Double-Blind Method ; Female ; Foot Dermatoses ; therapy ; Humans ; Lidocaine ; therapeutic use ; Male ; Middle Aged ; Ointments ; Prilocaine ; therapeutic use ; Warts ; therapy ; Young Adult
9.Unusual presentation of adult xanthogranuloma: a case report.
Lixian Chris TAN ; Kong Bing TAN ; Chen Wee Derrick AW
Singapore medical journal 2014;55(2):e25-7
Xanthogranulomas are the most common form of non-Langerhans cell histiocytosis. Both adult and childhood forms have been described. Adult cutaneous forms can present as solitary or multiple yellowish, orange-red or tan-hued papules. Herein, we present the case of a 28-year-old Chinese man with a skin-coloured nodule on his left nasal ala that persisted for several months. While initial impression was that of a fibrous papule of the nose, the results of an excision biopsy showed histological features corresponding to xanthogranuloma. This case demonstrates the condition’s myriad of dermatological presentations, and adds to the differential diagnoses of a cutaneous lesion found in the head and neck region.
Adult
;
Biopsy
;
Diagnosis, Differential
;
Granuloma
;
diagnosis
;
surgery
;
Histiocytosis
;
diagnosis
;
Humans
;
Male
;
Skin
;
pathology
;
Skin Diseases
;
diagnosis
;
surgery
;
Treatment Outcome

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