The specific causes of anal pain in women include the following: first, hemorrhoids: the most common in the clinic may be hemorrhoids, especially mixed hemorrhoids, internal hemorrhoids nucleus prolapse, or the formation of thrombosed external hemorrhoids, can lead to anal swelling, pain, and sometimes constipation or bowel difficulties when the pain increased. Second, pelvic inflammatory disease in women: Since the pelvic cavity is located in the lowest location of the rectum, often pelvic inflammatory disease in women can also stimulate the rectum, resulting in anal swelling and pain, accompanied by a feeling of small abdominal cramps. Third, hyperplasia: It is possible that the pain is caused by rectal polyps or rectal tumors, especially when malignant tumors invade the sacrococcygeal bone, the pain may be very intense. In conclusion, if you have swelling and pain in the anus, you must go to the hospital in time to find the cause and take the appropriate treatment.