Acute rheumatic fever in southern Saudi Arabia.

Forty six attacks of acute rheumatic fever (ARF) in forty patients were diagnosed between November 1987 and August 1995. Thirty four were initial attacks and 12 were recurrences. Arthritis was the commonest feature, 84.8%. Carditis occurred in 65.2% of the group, 67.6% of the initial attacks and 58.3% of the recurrences; however, the frequency of moderate/severe carditis was higher in recurrences, 25% versus 11.8%. Of those with carditis, mitral regurgitation occurred in 93.3%, aortic regurgitation in 16.7% and significant tricuspid regurgitation in 6.7%. Mitral stenosis was not encountered. No mortality occurred during ARF. Chorea, erythema marginatum and subcutaneous nodules were infrequent. These data are similar with those from a previous study which demonstrated the mild nature of ARF in Saudi Arabia, but showed higher frequency of carditis and suggested the frequency of carditis was not significantly higher during recurrences as compared to frequency of moderate/severe carditis.