Tests and diagnosisBy Mayo Clinic staff
Your child's doctor will:
- Gather a complete medical history. Your child's doctor will ask you about your child's past illnesses. He or she will also likely ask you about your child's diet and physical activity patterns.
- Conduct a physical exam. Your child's physical exam will likely include placing a gloved finger into your child's anus to check for abnormalities or the presence of impacted stool. Stool found in the rectum may be tested for blood.
More extensive testing is usually reserved for only the most severe cases of constipation. If necessary, these tests may include:
- Abdominal X-ray. This standard X-ray test allows your child's doctor to see if there are any blockages in your child's abdomen.
- Anorectal manometry or motility test. In this test, a thin tube called a catheter is placed in the rectum to measure the coordination of the muscles your child uses to pass stool.
- Barium enema X-ray. In this test, the lining of the bowel is coated with a contrast dye (barium) so that the rectum, colon and sometimes part of the small intestine can be clearly seen on an X-ray.
- Rectal biopsy. In this test, a small sample of tissue is taken from the lining of the rectum to see if nerve cells are normal.
- Transit study or marker study. In this test, your child will swallow a capsule containing markers that show up on X-rays taken over several days. Your child's doctor will analyze the way the markers move through your child's body.
- Colonoscopy. This procedure allows your child's doctor to examine the entire colon with a flexible, camera-equipped tube.
- Colonic manometry. In this test, done during a colonoscopy, a catheter is placed in the colon to determine if there are normal contractions in all parts of the colon.
- Constipation in children. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merckmanuals.com/professional/print/sec20/ch283/ch283f.html. Accessed July 15, 2011.
- Kay M, et al. Common gastrointestinal problems in pediatric patients. American College of Gastroenterology. http://www.acg.gi.org/patients/gihealth/pdf/pediatric.pdf. Accessed July 15, 2011.
- Constipation in children. National Digestive Diseases Information Clearinghouse. http://digestive.niddk.nih.gov/ddiseases/pubs/constipationchild/index.htm. Accessed July 15, 2011.
- Ferry GD. Treatment of chronic functional constipation and fecal incontinence in infants and children. http://www.uptodate.com/home/index.html. Accessed July 15, 2011.
- Ferry GD. Constipation in children: Etiology and diagnosis. http://www.uptodate.com/home/index.html. Accessed July 15, 2011.
- Pijpers MA, et al. Currently recommended treatments of childhood constipation are not evidence based: A systematic literature review on the effect of laxative treatment and dietary measures. Archives of Diseases In Childhood. 2009;94:117.
- Blackmer AB, et al. Constipation in the pediatric patient: An overview and pharmacologic considerations. Journal of Pediatric Health Care. 2010;24:385.
- Culbert TP, et al. Integrative approaches to childhood constipation and encopresis. The Pediatrics Clinics of North America. 2007;54:927.
- Walia R, et al. Recent advances in chronic constipation. Current Opinion in Pediatrics. 2009;21:661.