Vaginal itching with spots, what disease is it?

Patient's question:

Duration: One month
Current condition: Itching of the external genitalia, with white spots
Medical history: Had candidal vulvovaginitis

Doctor's answer:

Problem Analysis: There are many reasons for vaginal itching, with common causes being fungal or trichomoniasis infections. Additionally, some systemic diseases may also lead to vaginal itching. The treatment for vaginal itching requires identifying the underlying cause first, and then taking appropriate measures to adjust the pH level of the vagina, such as using alkaline solutions to rinse the vagina. For example, a 2-4% soda solution can be used to rinse the vagina to alter the environment in which fungi thrive.
Advice: It is recommended to pay attention to menstrual hygiene and maintain cleanliness and dryness of the external genitalia. Avoid scratching, hot water washing, and the use of soap. When infection occurs, use potassium permanganate solution for sitz baths. Underwear should be breathable and loose-fitting. Avoid alcohol and spicy or allergenic foods.