Functional uterine bleeding is primarily characterized by severe disruptions in menstrual cycle, amount, and duration. The disruptions in menstrual cycles typically manifest as an early onset of menstruation. The amount of menstruation is typically characterized as excessive, and the duration tends to be prolonged. Some women experience heavy bleeding or incomplete clearing, where they may remain unclean for half a month or even one or two months. This condition is primarily seen in adolescent girls and women going through menopause. Adolescent girls with uterine bleeding may experience anemia, and it could lead to infertility later on. Menopausal uterine bleeding may be accompanied by severe anemia, requiring some to be hospitalized for blood transfusions. Moreover, it is essential to perform an ultrasound if the uterine endometrium is thick, to rule out endometrial pathology.