Vaginal fistula is an abnormal connection between the vagina and bladder (vesicovaginal), rectum (rectovaginal), colon (colovaginal), or bowel (enterovaginal). It is usually caused by tissue damage during childbirth but can also result from other causes like Crohn's disease or surgery. Symptoms include incontinence, discharge, and pain. Diagnosis involves physical exams, scans, and tests. Treatment options include antibiotics, anti-inflammatory drugs, and surgery to close the fistula.