Prevalence of priapism and knowledge on this disease was assessed by interviewing a group of 114 sickle cell anemia patients, 5 years and older, considered to be genotypically homogenous (Benin or #19 haplotype). Prevalence of priapism in homozygous sickle cell patients was 26.3% (30/114) and that of the control group of subjects with Hb AA was 2% (2/102) (the difference was very significant: p = 5.10-7). Actuarial probability of having priapism by 20 years of age was 69 +/- 8.5%. Few homozygous patients without a history of priapism (15.8%) have heard about priapism. This lack of knowledge, added to low accessibility of a health care system, may explain the high rate of impotence (31.6%). The results of this study led us to plan a large program of infonnation about priapism and sickle cell disease in the Togolese population.

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