What are the causes of uterine bleeding?

The causes of uterine bleeding may involve multiple aspects, broadly categorized into physiological and pathological factors. Physiological causes: 1. Normal menstrual bleeding, which occurs due to the cyclical shedding of the endometrium. Additionally, light bleeding during the ovulation period may occur as a result of fluctuations in hormone levels. Pathological causes: 1. Gynecological disorders: such as cervicitis, cervical tumors, endometritis, ovarian cysts, etc., which may lead to abnormal uterine bleeding. 2. Pregnancy-related conditions: such as ectopic pregnancy and threatened miscarriage, which may present with irregular vaginal bleeding in the early stages. 3. Endocrine factors: hormonal imbalances or improper use of contraceptives may also cause abnormal uterine bleeding. 4. Systemic diseases: such as coagulation factor deficiencies, thrombocytopenic purpura, etc., which may impair clotting function throughout the body and consequently lead to uterine bleeding. The above are only some of the possible causes of uterine bleeding. If prolonged bleeding or severe symptoms occur, prompt medical evaluation and treatment are recommended.