Diagnosis of Constipation
Diagnosis of constipation starts with a thorough clinical evaluation that includes medical history, lifestyle assessment, physical examination, and possibly diagnostic tests. Because many factors can cause constipation, doctors consider a wide range of possibilities during evaluation. From diet and activity level to underlying medical conditions—pinpointing the root cause is crucial for effective treatment.
Doctors typically begin by asking about bowel movement patterns. They assess:
How often you go
Stool consistency
Degree of straining
Sensation of incomplete emptying
Diet, hydration, and physical activity
Use of medications or supplements
Any history of abdominal surgery or health conditions
They may also ask about “red flag” symptoms such as bleeding, severe pain, weight loss, or a family history of colorectal cancer, which would warrant further investigation.
A physical examination follows, including palpation of the abdomen to check for tenderness, bloating, or palpable masses. A digital rectal exam may also be done to evaluate anal tone. Detect faecal impaction, or uncover structural issues like fissures, haemorrhoids, or prolapse.
Diagnosis of Constipation
If constipation is persistent or unexplained, several tests may be ordered:
Blood tests to rule out hypothyroidism, diabetes, or electrolyte imbalance
Stool sample analysis if infection or inflammation is suspected
Abdominal X-ray or CT scan to check for impaction or obstruction
Colonoscopy or sigmoidoscopy to inspect for growths, strictures, or cancer—especially in those over 50 or with alarm symptoms
Transit studies, using marker capsules to monitor bowel movement speed via X-ray
Anorectal manometry to assess rectal muscle coordination
Defecography, an imaging test to observe how the rectum empties
Diagnosis of Constipation
In children and older adults, behavioural patterns and daily routines are also considered important diagnostic factors.
In conclusion, diagnosis of constipation is a systematic process that may include simple observation or more advanced imaging and tests. Early and accurate identification of the cause helps guide the best treatment and reduces the risk of chronic problems.
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