In-depth

Symptoms

Abdominal pain

Find out what causes different types of abdominal pain.

Anal pain

Rectal bleeding

Symptom Checker

Foot pain? Headache? Sore throat? Skin rash? Use the Symptom Checker to find out what's causing your symptom.

Tests and diagnosis

Colonoscopy

Flexible sigmoidoscopy

Has your doctor recommended a flexible sigmoidoscopy exam? Here's what you need to know about preparation and the exam itself.

Needle biopsy

June 12, 2015