In women of childbearing age, consider trichomoniasis if the leucorrhoea is increased, greyish, yellowish-white or yellowish-green, thin, purulent and frothy, with an odour, accompanied by itching of the vaginal opening and vulva, burning, pain and painful intercourse.
In post-menopausal women or those who have undergone surgical treatment of the ovaries or pelvic radiotherapy, increased, thin, yellowish leucorrhoea with vulvar itching should be considered atrophic vaginitis. If the leucorrhoea is increased, purulent, yellow or yellow-green in colour, viscous and may have a foul odour, it is mostly due to bacterial infection and can be seen in bacterial vaginitis, gonorrhoea, acute cervicitis or cervicitis, vaginal or cervical cancer with concurrent infection, pus accumulation in the uterine cavity, and when there is a foreign body in the vagina, it can also lead to purulent leucorrhoea. If the leucorrhoea increases and is clear and red-yellow and watery, you need to be alert to the possibility of tubal cancer.