Most of the causes of pain, itching and swelling in the pubic area are due to inflammation of the vulva and vagina, most commonly mycosis vaginalis. The most common cause is mycobacterial vaginitis. After the growth and development of mycobacteria in the vagina, if it is not treated in time, women will feel the itching and burning pain in the vagina, and serious women will even experience pain during sexual intercourse and painful urination, which is due to the stimulation of edematous vulva and vestibule by the urge to urinate and leads to pain, and serious women will experience swelling of the skin and mucous membranes of the vulva and the vagina. Of course, some women may also experience swelling and pain in the vulva if they have an abscess of the vestibular gland, but usually there is little itching. Therefore, it is important to go to the hospital for a gynecological examination when such clinical symptoms are detected.