In general, when the cause of vulvar itch is not clear, it is not recommended to use potassium permanganate to wash the vulva for the time being to avoid aggravating the condition. There are many causes of vulvar itching, such as vulvitis, local allergies, local skin diseases, such as eczema, dermatitis, etc. Not all causes of vulvar itching can be treated with potassium permanganate, so it is not recommended to use it on your own. Potassium permanganate is a strong oxidizing agent with antibacterial and anti-inflammatory effects, generally for bacterial infections caused by vulvovaginitis, vaginitis caused by vulvovaginal itching, washing can help relieve itching. If it is a fungal infection or other factors, then the use of potassium permanganate effect will be limited, and may aggravate the condition. Therefore, if you have vulvar itching, it is recommended to consult a doctor in time to find out the specific causes and choose the appropriate medication, do not use drugs at will, so as not to aggravate the condition.