___________________________________________________________________________________________ *Corresponding author: Email: namtadanladi@yahoo.com; British Journal of Medicine & Medical Research 2(3): 327-337, 2012 SCIENCEDOMAIN international www.sciencedomain.org Menstrual Pattern among Female Medical Students in University of Maiduguri, Nigeria Danladi Sambo Amaza 1* , Nuhu Sambo 2 , Joseph Vandi Zirahei 1 , Mohammed Babagana Dalori 1 , Helga Japhet 1 and Hamdalat Toyin 1 1 Department of Human Anatomy, College of Medical Sciences, University of Maiduguri, Borno State, Nigeria. 2 Department of Human Physiology, College of Medical Sciences, University of Maiduguri, Borno State, Nigeria. Received 3 rd December 2011 Accepted 22 nd February 2012 Online Ready 19 th April 2012 ABSTRACT Aims: To determine menstrual pattern and disorder associated with it among female medical students. Study Design: Cross-sectional study. Place and Duration of Study: College of Medical Sciences, University of Maiduguri, Borno State, Nigeria between February – September 2010. Methodology: Self descriptive cross-sectional study was carried out among 169 Medical students (MBBS II-V) between the ages 19-46 years. Respondents were selected from each class using stratified random sampling method. Stratification was done according to their class. Questionnaires were designed and administered to the respondents to complete. Three researchers and two research assistances were on site to assist. Students were briefed on the objective of the study and duly completed questionnaires were collected and analyzed. Subjects who had primary amenorrhea and/or history of abdominal or pelvic surgery were not eligible for the study. The questionnaire included data such as; age of menarche, menstrual pattern, severity of pain (dysmenorrheal), marital status, effects of exercise, socioeconomic status, Body mass Index (BMI) and Diet. The method of observation involved personal interaction and questioning of respondent to find out if they had anything peculiar about their cycle. The number of days of menstrual flow on menarche and number of pads use per day were in the questionnaire. Results: It was observed that 148(87.6%) respondents had regular length of menstrual cycle, particularly in the age groups 20-22 and 23-26 years which recorded 39 and 43 respondents respectively. Irregular menstrual cycle was found in 21(12.4%) Research Article