Sometimes itching, burning, and even discharge happen without an infection. Most often, it's an allergic reaction to or irritation from products such as:
It could also be from a lower level of hormones because of menopause or because you've had your ovaries removed. This can make your vagina dry, a condition called atrophic vaginitis. Sexual intercourse could be painful, and you may notice vaginal itching and burning.
Detergents
Douches
Fabric softeners
Perfumed soaps
Spermicides
Vaginal sprays