What is the reason for mild itching of the external genitalia?

Patient's question:

Detailed medical condition and consultation purpose: On June 6th, I had a slight itch in the external genital area. Due to pregnancy, I didn't visit the doctor in time. In mid-June, I had an abortion. The external genital area has been slightly itchy ever since, but it wasn't considered serious. It wasn't until August that I went to the hospital for a check-up. The first examination revealed a fungal infection, and I was prescribed medication for two courses. The next time I went for a check-up, it was diagnosed as general vaginitis, and the doctor prescribed medication—though I don't remember the specific name. After one course, the itching still persisted slightly after my period. I saw a different doctor for another examination, who also diagnosed it as general vaginitis. I was prescribed another two courses of medication, this time with dual-fungal tablets (Duo Cuo Tai). After that, the itching stopped. However, it started again after my period.

Doctor's answer:

Hello: Candidal vulvovaginitis is very stubborn and has a high recurrence rate. Treatment must be standardized and cover the entire course. Three negative results are required to be considered cured. If diagnosed with candidal vulvovaginitis, a 2%–4% soda solution can be used daily to rinse the external genitalia and vagina or for sitz baths. A 10-day course is recommended to alter the pH and create conditions unfavorable for the survival of the fungus. Then, nystatin can be used, such as in powder, tablet, suppository, or ointment form, inserted into the vagina or applied locally. The dosage is 100,000–200,000 units per time, once nightly, with a 10–14-day course. The external genitalia can be treated with 3% miconazole ointment for better results. Due to the stubborn nature of the disease and its tendency to recur, local treatment is generally preferred. Oral nystatin tablets can also be taken, with a dosage of 500,000–1,000,000 units, three times daily, for a 7–10-day course. Follow-up is then required, with three negative results needed to be considered cured.

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