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Itching around the vagina can have many causes. Perfumed soaps, perfumed douches, bubble baths, scented toilet paper, or darkly dyed underwear can irritate the skin. Having this irritation for a long time can lead to frequent scratching, which increases itching. Avoid using perfumed products in this area. And wear white cotton underwear if you notice that the itch is worse when you wear dark underwear.
Infections can sometimes cause itching. Even though you have been tested for a sexually transmitted disease, it is important to see your doctor. The doctor can check for other causes such as urinary tract infection or other infection.
If no infection is found and the itching appears to be caused by products, stop using them. You can also try an over-the-counter hydrocortisone cream in the morning and an over-the-counter antifungal cream at night. This may relieve the itch.
It is very important to see your doctor for the correct diagnosis and treatment. Infections (bacterial, fungal, or parasitic) can spread quickly and cause much discomfort in this area. While you may not feel internal itching, an infection could still arise from the vagina or urinary tract.