A 22-year-old woman presents with a 2-day history of vaginal itching and vulvar erythema. She reports one prior episode of similar symptoms earlier this year, which resolved with the use of an over-the-counter topical antifungal cream. She denies other underlying medical conditions, and she does not take any medications. A wet preparation of the vaginal discharge using 10% potassium hydroxide (KOH) demonstrates yeast consistent with vulvovaginal candidiasis. A urine pregnancy test is negative.