Potassium permanganate should not be used to wash the vulva during mycosis because it is highly oxidizing, but mycosis is mainly caused by Candida infection, which is intolerant to alkaline environment, and potassium permanganate is acidic, which will not inhibit the reproduction of mycobacteria but may aggravate the condition. Mycotic vaginitis can be treated with alkaline solutions such as sodium bicarbonate to wash the vulva. But no matter which wash is used, the main thing is to take vaginal or systemic medication for effective treatment. You can give clotrimazole suppositories for vaginal application or dacrynic suppositories for vaginal application. After a course of continuous medication, a routine review of the leucorrhoea should be performed at the end of the treatment to understand the treatment of vaginitis.