I have itching in vaginal area for the last four months and though i am taking medicine but not working no discharge, no physical relation, help pls

Vaginal itching: There are many causes to vaginitis. While infection, bacterial or otherwise, can cause vaginal itching, there are other causes. Contact dermatitis from scented soaps, lubricants, condoms, etc can cause vaginal itching. Other causes such as constricting clothing (nylons, thongs, etc), decreased estrogen, poor health can lead to vaginitis. I recommend f/u for more specific testing.