Women who have frequent or rough sex have a greater risk of suffering from vaginal irritation and burning. Sex causes friction, and this can tear vaginal tissue, even if you use lubrication.
While it can be difficult to see the cuts on your vagina, you might notice your nether regions are red and irritated.
The best treatment for this is to avoid sex for a few days until your vagina has healed. To prevent it from happening, avoid frequent or rough sex.
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Bacterial Vaginosis
A bacterial infection, also known as bacterial vaginosis, can cause burning in the vagina. With this type of infection, bad bacteria from various sources grow in the vagina. While symptoms vary with bacterial vaginosis, most women experience discharge and a fishy odor along with burning and irritation.