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  1. Chin GL, Shukor AB
    Med J Malaysia, 1993 Dec;48(4):436-9.
    PMID: 8183168
    Pain of psychogenic origin can be as frequently related to the musculoskeletal system as it is to the cardiovascular and gastrointestinal systems. We report here two patients who presented with rheumatic pains. Both were subsequently found to have an underlying psychogenic disorder though they were initially diagnosed to have a distinct rheumatic disease. It is easy for doctors to create nondisease when diagnosis is based mainly on investigative results. The practical points in recognising such patients are briefly discussed.
  2. Chin GL, Shukor AB
    Med J Malaysia, 1988 Dec;43(4):297-301.
    PMID: 3266523
    This paper discusses the spectrum of rheumatic diseases seen over a 24-month period from January 1986 to December 1987. Rheumatoid arthritis was the commonest rheumatic disorder seen, comprising of 47.1 % of all cases and ankylosing spondylitis was among the least frequent (0.9%). Most of the rheumatic diseases reported in the West are also seen in Malaysia. However, results of this study which is based on the hospital population may not be representative of the spectrum of rheumatic diseases in the our population.
    Key words: Epidemiology, occurence, rheumatic diseases, Malaysia
    Study site: Rheumatology clinics, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM), Kuala Lumpur, Malaysia
  3. Tong SF, Aziz NA, Chin GL
    Med J Malaysia, 2007 Dec;62(5):390-3.
    PMID: 18705473 MyJurnal
    Thrombocytopaenia is often relied upon as an important criterion for the diagnosis of dengue infection among patients presenting with an acute non-specific febrile illness. This study was aimed to assess usefulness of thrombocytopaenia in the diagnosis of acute dengue virus infection. This was a clinic based prospective cohort study from May to November 2003. Consecutive patients presenting with acute non-specific febrile illness of less than two weeks were selected from two urban primary care centres. We did full blood count examination (FBC) on the day of visit and dengue serology on day five of illness for all patients enrolled. We repeated the FBC examination for patients who had initial normal platelet counts. Thrombocytopaenia was defined as platelet count < 150 X 10(9)/L. Eighty-seven patients enrolled in the study. Complete data was available for 73 patients. The prevalence of acute dengue virus infection was 27.6%. The sensitivity and specificity were 88% and 71% respectively. The likelihood of acute dengue infection in the presence of thrombocytopaenia was 2.52 and likelihood of not having dengue infection in normal platelet count patients was 5.22. Thrombocytopaenia has fair predictive value in diagnosing acute dengue virus infection. It was more useful to exclude than to diagnose dengue infection.

    Study site: Primary Care Centre of Hospital Universiti
    Kebangsaan Malaysia (HUKM) and Batu 9 Health Clinic Hulu Langat,
  4. Tong SF, Aziz NA, Chin GL
    Medicine & Health, 2006;1(1):25-30.
    MyJurnal
    A proportion of patients with acute viral fever with thrombocytopaenia does not necessary have dengue infection. Managing them indiscriminately as dengue infection may not be appropriate. The prevalence of this problem is not exactly known. The objective of this study is to determine the prevalence of acute non-dengue febrile thrombocytopaenia among adult patients presenting with acute non-specific febrile illness in an outpatient setting. This was a clinic-based cross sectional study. Consecutive patients presenting with non-specific febrile illness of less than two weeks were selected from the Primary Care Centre of Hospital Universiti Kebangsaan Malaysia (HUKM) and the Batu 9 Cheras Health Clinic. Full blood count was done on the day of visit and dengue serology was done on day five of illness for all patients enrolled. Seventy three patients participated in this study from May to November 2003. Among the patients, 35 (47.9%) were noted to have thrombocytopaenia. Fourteen (40%) patients with thrombocytopaenia were serologically negative. The prevalence of non-dengue febrile thrombocytopaenia was 19.2%. A significant number of patients with acute non-specific febrile illness with thrombocytopaenia were negative for dengue serology. These patients should be differentiated from those with acute febrile thrombocytopaenia, as they might differ in their natural history from those with dengue infection, and hence require different management strategies.

    Study site: Primary Care Centre of Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM)
  5. Anandan S, Othman M, Cheong I, Chin GL
    Singapore Med J, 1995 Oct;36(5):559-61.
    PMID: 8882549
    In recent years there have been many reports of connective tissue diseases especially scleroderma following exposure to silica and silicone. We report a 51-year-old Chinese who developed a scleroderma-like disease and pulmonary silicosis eight years after exposure to silica. To our knowledge, this is the first case to be reported in Malaysia.
  6. Tong SF, Abd Aziz NA, Chin GL, Khairani O
    Malays Fam Physician, 2006;1(1):15-8.
    PMID: 26998201 MyJurnal
    Identifying clinical features that differentiate acute febrile thrombocytopaenia from acute febrile illness without thrombocytopaenia can help primary care physician to decide whether to order a full blood count (FBC). This is important because thrombocytopaenia in viral fever may signify more serious underlying aetiology like dengue infection.
  7. Segasothy M, Chin GL, Sia KK, Zulfiqar A, Samad SA
    Br J Rheumatol, 1995 Feb;34(2):162-5.
    PMID: 7704463
    We determined the consumption of non-steroidal anti-inflammatory drugs (NSAIDs) and the prevalence of chronic renal impairment and renal papillary necrosis (RPN) in patients with various types of arthritis. Ninety-four patients with chronic arthritis who had consumed more than 1000 capsules and/or tablets of NSAIDs were studied. Renal profiles and radiological investigations such as intravenous urogram (IVU), ultrasonography (US) and computed tomography (CT) were performed to look for evidence of RPN. Twelve patients did not complete the study. Ten of the 82 patients who had completed the study (12.2%) had radiologic evidence of RPN. Five out of 53 patients (9.4%) with rheumatoid arthritis, three out of 11 patients (27.3%) with gouty arthritis and two out of seven patients (28.6%) with osteoarthritis had RPN. Renal impairment (serum creatinine levels of 125-451 mumol/l) was found in 20 patients (24.4%). The patients had consumed 1000-26,300 capsules and/or tablets over a period ranging from 1 yr to more than 30 yr. Patients with chronic arthritis who consume excessive amount of NSAIDs are at risk of developing RPN and chronic renal impairment.
  8. Hanip MR, Cheong IK, Chin GL, Khalid BA
    Singapore Med J, 1990 Apr;31(2):159-61.
    PMID: 2371581
    Two cases of hypokalaemia with serum potassium levels of 1.4 mmol/L and 1.9 mmol/L causing severe periodic paralysis since childhood are presented. There were associated with muscular aches and markedly raised muscle enzymes suggesting massive rhabdomyolysis. These abnormalities were due to renal tubular acidosis with markedly acidic arterial pH. The hypokalaemia and rhabdomyolysis responded to potassium and bicarbonate replacement. We postulate these patients had sporadic distal type of renal tubular acidosis and that the hypokalaemia and acidosis had caused the rhabdomyolysis.
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