Could IBS be causing my constipation at 35?

Hello,

Welcome to icliniq.com.

I have gone through your query and understand your concern.

Possible causes include slow transit constipation, where the colon moves stool very slowly. This can lead to infrequent, hard stools, sometimes with straining, bloating, or abdominal discomfort. Another possibility is pelvic floor dysfunction or outlet obstruction.

In this condition, the muscles used to pass stool do not coordinate properly, also called dyssynergia (a lack of muscle coordination). This can create a feeling of constipation even if the colon moves stool normally.

Irritable bowel syndrome (a chronic gut-brain disorder causing abdominal pain) with constipation is another cause and usually includes abdominal pain or bloating that improves after a bowel movement. Unlike slow transit constipation, pain is a more prominent feature.

Other secondary causes are less likely given your test results. Still, they may include medications such as painkillers or antidepressants, electrolyte imbalances, or neurological issues, which are rare unless accompanied by other symptoms.

Fiber and water sometimes do not help because if the stool moves very slowly, fiber can worsen bloating. If the pelvic floor muscles do not relax properly, fiber alone is insufficient because the stool cannot exit efficiently.

The following steps to explore include a detailed bowel habit assessment, covering stool frequency, consistency (using the Bristol stool scale), straining, and incomplete emptying.

A pelvic floor evaluation or biofeedback therapy may be helpful, as biofeedback can be very effective if muscle coordination is the issue. Motility tests, such as a colonic transit study using markers or scintigraphy, may be considered to determine whether slow transit constipation is present.

Medication options can be considered if lifestyle measures fail, including osmotic laxatives such as Polyethylene glycol 3350 (Movicol), stool softeners like Docusate, and prescription agents for chronic constipation, including Linaclotide, Plecanatide, and Lubiprostone. Prescription medications should be started only after a thorough evaluation.

For now, keep a bowel diary for one to two weeks, noting frequency, consistency, straining, and bloating. Using gentle osmotic laxatives, rather than relying solely on fiber, may be beneficial. Establishing a morning routine and attempting a bowel movement after breakfast can help due to the gastrocolic reflex. Excessive straining should be avoided, as it can worsen pelvic floor problems over time.

I hope I have answered your question.

Let me know if I can assist you further.

Thank you.