What causes aching pain in the anal area and lower abdomen?

Anal and lower abdominal pain may be caused by various factors, mainly including: 1. Constipation: Long-term lack of bowel movements leads to stool accumulation, which compresses the abdomen and anus, causing a sensation of heaviness and pain. 2. Intestinal diseases: Such as enteritis, proctitis, and colitis, in which inflammation causes congestion and edema of the intestinal mucosa, stimulating the lower abdomen and anus and resulting in a sensation of heaviness and pain. 3. Rectal and colonic polyps: Enlargement of polyps may increase intestinal pressure, causing abdominal and anal heaviness and pain. 4. Hemorrhoids: Venous varicosities lead to anal stenosis, which may cause abdominal pain and anal swelling. 5. Pelvic diseases: Such as female pelvic inflammatory disease, in which inflammation affects the rectal area, causing anal and lower abdominal heaviness and pain. 6. Other factors: Such as urinary tract infections, acute enteritis, perianal abscesses, and others, which may also lead to anal and lower abdominal heaviness and pain.