Constipation Diagnosis

NewsGuard 100/100 Score

Constipation affects people of all ages at least once in their life time. It is a common condition. Diagnosis usually involves detailed history of the condition from the patient about the signs and symptoms.

Tests and diagnostic procedures are usually not needed for diagnosis of constipation.

Diagnosis of constipation involves:-

Details of bowel habits

Patients should not be embarrassed or shy in describing their normal bowel habits and the changes experienced. Diagnosis is made from the significant change in the bowel habits. Details of ignoring urges to pass stool and inadequacy of time and privacy for passing stools are also asked.

Details of diet and lifestyle habits

The patient is asked to detail the amount of fibres (from fruits and vegetables and whole grains) that they get in their daily diet. Lack of fluids and increased amount of red meats, processed meats and canned foods also leads to increased risk of constipation

Details of medications and laxative use

Several medications may cause constipation as a side effect. Laxative abuse is also an important cause of constipation and needs to be detected while diagnosing constipation.

Constipation criteria

Criteria for constipation are included in the ROME criteria. This includes:-

  • Less than three bowel movements a week
  • Passage of hard stools in more than 25% of bowel motions
  • Sense of incomplete bowel movements in more than 25% of bowel motions
  • Excess straining in more than 25% of bowel motions
  • Necessitating  digital manipulation to facilitate passage of stools

Physical examination

Physical examination involves examination for fecal or stool impaction. Abdomen is examined for abnormalities as well.

Neurological disorders

Neurological disorders or spinal disorders are examined as they may lead to delay in bowel transit time and constipation. Spinal cord injury, multiple sclerosis, Parkinson’s disease etc. has to be ruled out.

Blood tests

Blood tests may be advised to rule out other conditions. If inflammatory bowel disease or bowel cancer is suspected a colonoscopy or sigmoidoscopy is advised.

Psychiatric evaluation

Psychiatric evaluation is made to detect underlying cause of constipation. Previous history of sexual abuse, violence, trauma, fear or unusual attitude towards bowel motions, depression and eating disorders have to be ruled out or detected.

Anorectal function tests

Anorectal function tests may be advised to detect increased muscle tone of the anus sphincter. Tests include Manometry for Hirschsprung’s disease and Electromyography for spastic pelvic floor dysfunction. Rectal mucosa may be taken for biopsy to examine for abnormalities.



Further Reading

Last Updated: Jul 16, 2023

Dr. Ananya Mandal

Written by

Dr. Ananya Mandal

Dr. Ananya Mandal is a doctor by profession, lecturer by vocation and a medical writer by passion. She specialized in Clinical Pharmacology after her bachelor's (MBBS). For her, health communication is not just writing complicated reviews for professionals but making medical knowledge understandable and available to the general public as well.


Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Mandal, Ananya. (2023, July 16). Constipation Diagnosis. News-Medical. Retrieved on April 19, 2024 from

  • MLA

    Mandal, Ananya. "Constipation Diagnosis". News-Medical. 19 April 2024. <>.

  • Chicago

    Mandal, Ananya. "Constipation Diagnosis". News-Medical. (accessed April 19, 2024).

  • Harvard

    Mandal, Ananya. 2023. Constipation Diagnosis. News-Medical, viewed 19 April 2024,


The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
Post a new comment

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.

You might also like...
Oral diabetes and obesity meds danuglipron and orforglipron show promise but have gastrointestinal drawbacks