Abstract
SUMMARY Bacterial vaginosis (BV) is an alteration of the vaginal flora, where the normally predominant lactobacilli are replaced by a cocktail of organisms including Gardnerella vaginalis and anaerobes. It presents with a grey, homogenous, offensive vaginal discharge that has a raised pH. However, around half the women with this condition are asymptomatic. Diagnosis is best made by microscopic examination of a Gram‐stained smear of vaginal secretions. Treatment is with metronidazole or clindamycin. The indications for treatment of asymptomatic BV are not clear, but women should probably be treated before any invasive gynaecological procedure, including intrauterine contraceptive device (IUCD) insertion. BV during pregnancy is associated with preterm labour, although a causal effect is not proven; studies are in progress to determine whether treatment of BV will improve the outcome of these pregnancies.
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