text_1: 39-year-old woman with complaints of vaginal discharge and clue cells on wet mount.  I treated her with metronidazole.  She has it back again.  Why did she get it again so soon?  What is the failure rate with metronidazole for bacterial vaginitis?  What are the predisposing factors for bacterial vaginosis?
text_2: Woman with polycythemia vera, severe itching, how do you treat itching?