This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of menstruation, Subject name: Gynaecology & Obstetrics
Halba disease is ________ 
Select and explain. 
A. Irregular shedding due to persistent corpus leuteum, B. Menstruation is irregular, C. Irregular ripening, D. Due to adenomatous polyp
A: Irregular shedding due to persistent corpus leuteum
Answer: A: Irregular shedding due to persistent corpus leuteum 
Explanation: Halbans disease is irregular shedding due to persistent corpus luteum. It is rare and usually self-limiting Menstruation occurs on time and is prolonged but not heavy.. Ref: Shaw&;s textbook of Gynaecology 17th edition pgno: 139