What causes a persistent feeling of rectal fullness and the urge to defecate?

A feeling of rectal pressure with frequent urge to defecate may indicate: 1. Rectal prolapse: Partial prolapse of the rectal mucosa or the lower segment of the rectum may cause anal discomfort and a sensation of needing to defecate. 2. Hemorrhoids: Internal or external hemorrhoids can cause anal discomfort, particularly when the hemorrhoids are enlarged or inflamed, which may increase the urge to defecate. 3. Irritable bowel syndrome: This is a common functional bowel disorder often presenting with abdominal pain, diarrhea, constipation, or changes in bowel habits. 4. Rectal polyps or tumors: Polyps or tumors growing inside the rectum may irritate the rectal wall, causing rectal pressure and frequent urge to defecate. 5. Anal sphincter spasm: Inappropriate sphincter contraction may also cause similar symptoms. It is recommended to maintain a balanced diet and increase dietary fiber intake to improve intestinal motility. Maintain good bowel habits and avoid prolonged sitting. If symptoms persist, seek timely medical consultation for relevant examinations such as digital rectal examination and colonoscopy to establish a clear diagnosis.