Persistent Rectal Pain and Constant Sensation of Urgency to Defecate

Patients who experience persistent rectal tenderness—particularly pain elicited by gentle digital pressure on the rectal wall—often report a sensation of incomplete evacuation or a constant urge to defecate, even when the bowel is empty. This symptom complex, commonly described as “tenesmus,” may signal underlying pathology involving the distal colorectum, pelvic floor, or adjacent structures.

Rectal tenderness on palpation can arise from multiple etiologies. Inflammatory conditions such as proctitis—whether infectious (e.g., gonorrhea, chlamydia, or herpes simplex virus), autoimmune (e.g., ulcerative colitis limited to the rectum), or radiation-induced—are frequent contributors. Other potential causes include perirectal abscesses, anal fissures, solitary rectal ulcer syndrome, and early-stage rectal neoplasms. Pelvic floor dysfunction—including dyssynergic defecation or chronic levator ani syndrome—may also manifest with localized tenderness and persistent tenesmus without structural abnormality.

Clinical evaluation should begin with a thorough history focusing on symptom duration, associated features (e.g., bleeding, mucus discharge, fever, weight loss), bowel habit changes, and risk factors for infection or inflammatory bowel disease. Physical examination must include careful inspection of the perianal region, digital rectal examination to assess sphincter tone, identify masses or induration, and localize areas of tenderness, and—if indicated—anoscopy or flexible sigmoidoscopy to visualize mucosal integrity.

Diagnostic workup is tailored to clinical suspicion: stool studies for pathogens and calprotectin, serologic testing for IBD, imaging (e.g., pelvic MRI) for deep perirectal inflammation or fistula, and colonoscopy with biopsies when malignancy or chronic colitis is suspected. Early and accurate diagnosis is essential—not only to guide appropriate therapy but also to rule out serious conditions such as locally advanced rectal cancer or Crohn’s disease with perianal involvement.