Hi, Welcome to HCM, Causes of Dysfunctional uterine bleeding are PCOD, hormonal imbalance, trauma, anovulatory cycle, infection(cervicitis, endometritis, vaginitis), uterine polyp/fibroid, P.I.D., cancer (of vagina, cervix, uterus, ovaries), certain drugs and bleeding disorder etc. Patients suffering with Poly cystic ovarian disease have multiple small cysts in their ovaries. Ovaries become enlarged and produce excessive amount of estrogen and androgen hormones. Absence of ovulation causes infertility. Many patients with PCOD also have insulin resistance and have raised level of insulin. These patients may not respond to clomiphen, thus treated with anti diabetic drugs like metformin and troglitazone. Clomiphen is used to stimulate ovulation. Low doses of dexamethasone can be given simultaneously to suppress androgen production from adrenal gland. Detailed history, examination and investigations are required. Thus you should consult a Gynecologist to establish a diagnosis and treatment. Thanks for trusting Healthcaremagic and posting your query. Hope you found my response to your query informative and helpful. If you have further concerns in this regard, you can submit those with Healthcaremagic as well. With good wishes,