Vulvodynia
One of the most misunderstood vaginal conditions is vulvodynia. The medical community is baffled by this condition and can't explain why it happens. They suspect that many women have a genetic predisposition for it. Immune deficiencies, hormones, nerve connection abnormalities, oxalates in urine and chronic inflammation are other considerations for possible causes.
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Most sufferers feel pain at the opening of the vagina and the bottom of the vulva.
If you feel you may have this condition, seek medical attention. Your doctor can use a cotton swab to test for it by swabbing the site of the pain or burning.