The dry and itchy vulva is probably due to sclerosing moss caused by vulvar dystrophy. This condition can be treated with local progesterone ointment and dermaplanin alternately for half a month. If the symptoms are not relieved, you must go to the hospital for a detailed examination, and it is recommended to take local tissues for pathological tests, and then decide on a treatment plan according to the results. If it is the case that the effect of medication is not good, it is recommended to surgically remove the treatment. It is recommended not to wash the vulva with shower gel or soap during the period of illness, but just wash the vulva with water, mainly to avoid local irritation. Also, pay attention to a light diet and do not eat stimulating foods. It is best to wear loose underwear and ensure enough sleep.