Content on this website is provided for information purposes only. Information about a therapy, service, product or treatment does not in any way endorse or support such therapy, service, product or treatment and is not intended to replace advice from your doctor or other registered health professional. The information and materials contained on this website are not intended to constitute a comprehensive guide concerning all aspects of the therapy, product or treatment described on the website. All users are urged to always seek advice from a registered health care professional for diagnosis and answers to their medical questions and to ascertain whether the particular therapy, service, product or treatment described on the website is suitable in their circumstances. The State of Victoria and the Department of Health & Human Services shall not bear any liability for reliance by any user on the materials contained on this website. . Vaginal thrush is a common infection caused by an overgrowth of Candida albicans yeast. This yeast lives naturally in the bowel and in small numbers in the vagina. It is mostly harmless, but symptoms can develop if yeast numbers increase. About 75 per cent of women will have vaginal thrush in their lifetime.. Thrush is caused by a fungus called candida that is normally harmless. Thrush tends to grow in warm, moist conditions and develops if the balance of bacteria changes. Thrush tends to grow in warm, moist conditions and develops if the balance of bacteria changes..