Bacterial vaginosis is a common condition that occurs when the balance of bacteria within the vagina is disturbed and certain strains become overgrown. The exact causes are unknown, but it is thought that hormonal changes during the menstrual cycle, use of antibiotics, semen in the vagina following unprotected intercourse, and the use of the coil may have an effect.
It is not clear whether the infection is transmitted from person to person through sexual contact, although it is more common in those who are sexually active, or who have new or multiple partners.
Many individuals affected with bacterial vaginosis are asymptomatic. Those with symptoms generally experience a thin grey/white discharge, often with a strong, unpleasant fishy odour which is more prominent after sexual intercourse. Those with bacterial vaginosis are usually effectively treated with antibiotics.
