ABSTRACT
Background: Psoriasis has been shown to be associated with a higher risk of metabolic syndrome and cardiovascular disease. Objective: To investigate the prevalence of metabolic syndrome among patients with psoriasis and study the association between psoriasis and cardiovascular risk factors. Methods: This was a hospital based case-control study conducted at the Dermatology Clinic, University Malaya Medical Centre (UMMC) from May 2010 to March 2011. A total of 131 adult patients with psoriasis and 129 age-, gender- and race-matched controls were recruited. All subjects answered a standardised cardiovascular risks questionnaire and had anthropometric measurements recorded. Laboratory investigations included fasting glucose / lipid profile, erythrocyte sedimentation rate (ESR), c-reactive protein (CRP), urine microalbumin:creatinine ratio and an electrocardiogram. The diagnosis of metabolic syndrome was made using the harmonised criteria for metabolic syndrome in South East Asians. Statistical analysis was performed using statistical processing software (SPSS-17). Results: Metabolic syndrome was significantly higher among patients with psoriasis (64.9% versus 51.9%) (p = 0.034). The presence of metabolic syndrome was associated with low high density lipoprotein (HDL) (p=0.002) and high triglyceride (TG) levels (p = 0.014). The prevalence of diabetes mellitus was also significantly higher among patients with psoriasis (46.6% versus 27.1%) (p = 0.001). Hypertension, ischaemic heart disease, low density lipoprotein (LDL) levels, smoking and obesity were not significantly higher among patients with psoriasis. Conclusion: Our results demonstrate an association between psoriasis and metabolic syndrome which was primarily due to diabetes mellitus and dyslipidaemia.