You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Halban's disease is due to : and explain in detail?
Irregular Endometrial Shedding (Halban's Disease) It is rare and self-limited Irregular shedding is due to persistent corpus luteum The menstruation comes on time, is prolonged but not heavy Progestogen can suppress the bleeding, but needs to be taken on tapering dose for 20 days to complete the cycle Reference: Shaw's textbook of Gynaecology; 16th edition; Page 307