The lower abdomen is uncomfortable and the anus has a feeling of swelling, or consider the symptoms of intestinal spasm, mostly due to eating spicy, stimulating or unclean food, there is excessive intestinal peristalsis caused by intestinal spasmodic pain. And the anus has the discomfort of swelling or the feeling of urgency, generally through local heat or defecation after the symptoms can be relieved. In addition, the more common pain in the abdomen and anal swelling in women is considered to be symptoms of pelvic inflammatory disease or adnexitis, which is caused by the special anatomy of women. You can go to the hospital for ultrasound examination to confirm the diagnosis. It can also not be ruled out that diseases in the abdominal cavity cause irritating fluid that accumulates in the pelvis and is stimulated by inflammatory fluid, resulting in abdominal discomfort and anal swelling. Try to go to the hospital, so that the doctor examination and diagnosis of timely and symptomatic treatment.