What causes the sensation of pain in the lower abdomen and a dragging pain in the anus?

Lower abdominal pain accompanied by a feeling of rectal heaviness can be caused by various factors, mainly including: 1. Gynecological diseases: such as pelvic inflammatory disease, ectopic pregnancy, etc. Pelvic inflammatory disease may cause pelvic congestion and edema, leading to lower abdominal pain, and may involve the anus, causing a sensation of heaviness. In the case of ectopic pregnancy, the embryo implants in an abnormal location, which may also cause lower abdominal pain and anal heaviness. 2. Anorectal diseases: such as perianal abscess, proctitis, etc. A high-located perianal abscess may irritate the rectum, causing pain in the lower abdomen and anus. Proctitis may cause left-sided abdominal pain and a feeling of rectal pressure due to inflammation. 3. Other factors: such as intestinal dysfunction or intestinal tumors may also lead to similar symptoms. Intestinal dysfunction may manifest as mild lower abdominal pain and abnormal bowel movements, while intestinal tumors may stimulate the rectal mucosa due to the lesion, causing lower abdominal pain and anal heaviness.