The doctor may suspect IBS based on your symptoms and past health. There are no specific tests for IBS. Your doctor will rule out other conditions that cause similar problems.
A physical and rectal exam will be done.
IBS may be diagnosed if you had 2 or more of the following symptoms on 1 or more days a week, over the past 3 months:
Tests may include:
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Diagnosis of irritable bowel syndrome. National Institute of Diabetes and Digestive and Kidney Diseases website. Available at: https://www.niddk.nih.gov/health-information/digestive-diseases/irritable-bowel-syndrome/diagnosis. Updated November 2017. Accessed June 7, 2019.
Ford AC, Lacy BE, Talley NJ. Irritable bowel syndrome. N Engl J Med. 2017;376(26):2566-2578.
Irritable bowel syndrome (IBS). EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T113627/Irritable-bowel-syndrome-IBS. Updated September 10, 2018. Accessed June 7, 2019.
Wilkins T, Pepitone C, Alex B, Schade RR. Diagnosis and management of IBS in adults. Am Fam Physician. 2012;86(5):419-426.
Last reviewed December 2018 by EBSCO Medical Review Board Daus Mahnke, MD Last Updated: 6/7/2019