What should I do if I have bacterial vaginosis and itchy vulva?

Patient's question:

History of previous treatment and its effectiveness: Oral metronidazole, vaginal metronidazole administration

Doctor's answer:

This disease is caused by a mixed infection of Gardnerella vaginalis and many anaerobic bacteria. It can be transmitted through sexual contact and has a higher incidence rate among populations with promiscuous sexual relationships. In clinical diagnosis, careful examination of the secretion smear can reveal a large number of pus cells and identify the pathogenic bacteria, but the secretion will never contain trichomonas or molds.
Treatment with oral medications:
a. Metronidazole: It is currently widely believed to have reliable efficacy. If the dose is high or to prevent gastrointestinal reactions, vitamin B6 can be added.
b. Miconazole (Micatin): It is effective against a variety of Gram-positive and Gram-negative bacteria and has good efficacy in inhibiting the growth of anaerobic bacteria, so it can also be used.
c. Trimethoprim (Trimethoprim): It is effective against multiple different Gram-positive and Gram-negative bacteria and has good efficacy in promoting the growth of anaerobic bacteria, so it can also be used.