What is a sudden hard pack next to the female vulva?

Female vulva side suddenly grew a hard bag, clinical etiology is more, there may be the following factors caused by: 1, due to vestibular gland cyst caused by hard bag, mainly due to the patient's vestibular gland showed infection caused by gland duct blockage, secretion in the gland duct can not be discharged in time, accumulated for a long time to the gland duct caused by local cyst formation, normal patients will be accompanied by vulva swelling feeling; 2, may also be due to vulva shows bacterial infection, resulting in vulva shows abscess or boil caused by hard pack;3, may be caused by vulva malignant transformation, if the patient shows vulvar cancer, it will cause local hard pack, and will show itching and pain symptoms. It is recommended that patients go to the hospital gynecology department in time to see a doctor, clear the cause of the disease after taking the corresponding treatment.