Abstract
BackgroundThe episodic nature of gout and diagnostic uncertainty in the absence of microcrystal evidence make it particularly difficult to estimate the frequency of gout. Our aim was to review the literature on the epidemiological and diagnostic aspects of gout in sub-Saharan Africa.MethodsThis literature review was conducted using the MEDLINE database (via PUBMED), Google Scholar, and conference abstracts. The selection process was based on reading the titles first, then the abstracts, and then the full texts once the articles had been selected. Studies were included in this review if they presented original findings on the epidemiological and/or diagnostic aspects of gout in sub-Saharan Africa. Two groups of two investigators independently reviewed the studies. The results were analysed descriptively.ResultsThe literature search identified 131 articles and 22 conference abstracts. Nineteen articles were included in our review. Twelve studies were retrospective, five were cross-sectional, one was prospective, and one was both retrospective and cross-sectional. The duration of the studies ranged from 1 to 15 years, and the sample size ranged from 15 to 511 patients, for a total of 2557 patients. Gout was quite common, with a maximum frequency of 11.87%. Fourteen articles diagnosed gout via criteria, including 9 studies totaling 1174 patients via the 1977 ACR criteria. Gout tophi were reported in 15 articles involving 464 patients. Of these studies, seven looked for monosodium urate crystals in 317 (43.85%) of 723 patients. Among the 317 patients, monosodium urate crystals were detected in 263 (82.97%) patients. Eleven studies reported mean uricemia values ranging from 452.09 µmol/L to 642.44 µmol/L, with a mean of 510.63 µmol/L.ConclusionsThis review revealed that all the studies conducted in sub-Saharan Africa were intrahospital studies, and the majority were retrospective. Consequently, there is a clear need for population-based studies.
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