A cross-sectional population-based study was conducted in Pelotas, Rio Grande do Sul State, Brazil, to 46.4% (43.3-49.4). The most prevalent disorder was heavy menstrual bleeding (23.2%; 20.5-25.8), followed by short cycle (19.2%; 16.6-21.8), long cycle (14.8%; 12.7-16.9), inter-menstrual bleeding (11.1%; 9.1-13.2), and prolonged menses (7.9%; 6.3-9.4 46,4% (43,4-49,4). O mais prevalente foi sangramento menstrual excessivo (23,2%; 20,5-25,8), seguido de ciclo menstrual curto (19,2%; 16,6-21,8), ciclo menstrual longo (14,8%; 12,7-16,9), sangramento intermenstrual (11,1%; 9,1-13,2) e menstruação prolongada (7,9%; 6,3-9,4