FAQ Category: Side Effects of Sigmoidoscopy

Walking, drinking warm fluids, and avoiding heavy meals can ease gas and bloating. Over-the-counter pain relievers are rarely needed. If pain persists, consult your doctor.

Yes, a small amount of bleeding (especially after biopsy or polyp removal) is normal and should resolve within 1–2 days. However, heavy bleeding or blood clots require immediate medical attention.

If no sedation was used, you can usually drive immediately after the procedure. If sedation was given, you should not drive for at least 12–24 hours, as drowsiness may affect your reflexes and judgment.

Most patients describe the procedure as uncomfortable rather than painful. Flexible sigmoidoscopy typically causes mild cramping or pressure. Rigid sigmoidoscopy can be more uncomfortable, but it is less commonly used today.

Flexible sigmoidoscopy usually causes fewer side effects than colonoscopy because it examines a smaller portion of the colon and often does not require sedation. Colonoscopy may cause more discomfort, longer recovery time, and a slightly higher risk of complications.