Thrush (vulvovaginal candidiasis) is caused by an overgrowth of Candida, a yeast that normally lives harmlessly in the vagina. It becomes a problem when the natural balance of bacteria and yeast is disrupted. Common triggers include: • Antibiotics • High sugar levels / diabetes • Tight or synthetic clothing • Irritation from soaps or perfumed products • Changes in hormones • Weakened immune system • Sexual activity (not an STI, but can be triggered by sex) Perimenopause brings fluctuating oestro