What causes vaginal itching?

Itching of the vulva may be caused by excessive vaginal discharge that has not been cleaned promptly or by failure to change underwear regularly. It could also result from an allergic reaction due to substandard undergarment materials. If pathogenic microorganisms such as bacteria, fungi, or trichomonads infect the area and cause vulvitis, itching may also occur. If the above symptoms appear, it is recommended to seek medical attention promptly, identify the underlying cause, and follow medical advice for targeted treatment.