Suggest Remedy For Itch Labia With Liquid Discharge

My labia majora is extremely itchy. It hurts after I scratch it for a while. There is also a discharge of a very diluted liquid at all times. This is a recurrent problem that i've had for almost a year.Comes every 4 months or so. It usually helps when i soak myself in bath of warm water with salt, but nothing this time.
Pharmacist prescribed Canestene, but no improvement.
I have also used some Fucidin, and again no improvement.
I am not sexually active.
I'd appreciate the help very much.