system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
In DUB, there is:
assistant
The correct answer is  Ans. is a, i.e. Increased estrogenRef: Shaw 15th/ed, p301DUB is mainly anovulatory:Bleeding occurs due to the hypertrophy and hyperplasia of the endometrium induced by a high titer of estrogen in the circulating blood is absence of progesterone.This is the reason why initially due to lack of progesterone patients complain of amenorrhea and later on, due to excessive estrogen they complain of excessive bleeding.