Background: Abnormal uterine bleeding (AUB) is bleeding from the uterus which is more than the usual or which occurs for a longer period than normal or which occurs at an irregular time. AUB can occur in all age groups with different modes of presentation and is also one of the important symptom or presenting complaint where in people tend to see their doctors. There are wide range of causes which include fibromyoma, adenomyosis, endometrial polyp, ovarian tumor, pelvic inflammatory disease (PID), endometrial hyperplasia, endometrial carcinoma, hormonal imbalance (like hypothyroidism) or hypothalamic pituitary diseases. Methods: This prospective observational study was conducted by the department of OBG at Narayana medical college, Nellore, Andhra Pradesh from December 2019 to May 2020. A total of 102 patients were included in the study on the basis of inclusion criteria. Results: The maximum cases 52 (50.1%) were in the age of 41-50yrs followed by 30(29.4%) in the age group 31-40 years. The mean age of the patients was 44.87(SD9.67) years. The most common mode of presentation was heavy menstrual bleeding seen in 55 cases (53.9%) followed by prolonged menstrual bleeding in 22 cases (21.6%). Proliferative endometrium was found in 44 (43.1%) cases followed by secretory endometrium in 36 (35.3%) cases and endometrial hyperplasia in 15 (14.7%) cases.