Why does vulva ache a bit how to do

Vulva shows pain symptoms, may be caused by the following factors: first, may be caused by trauma, if the female genital parts by bumping and other factors, will show vulva pain symptoms; second, if sexual life after showing vulva pain, there may be sexual life process, too rough action caused by vulvar pain symptoms; Third, it is possible that the vulva parts showed infection caused by, if the symptoms of vulvar pain is more serious, it is recommended to go to the hospital in time.