I am 34, female. How to manage watery diarrhea and cramps?

Question

Hello doctor,

I am a 34-year-old woman experiencing urgent, watery diarrhea four to six times daily, severe abdominal cramping, and bloating that has been disrupting my life for over a year. My colonoscopy was normal, but my fecal calprotectin is mildly elevated at 120 μg/g, and the small intestinal bacterial overgrowth (SIBO) breath test showed bacterial overgrowth.

I have lactose intolerance confirmed by the hydrogen breath test, and my vitamin B12 is low at 250 pg/mL, possibly due to malabsorption. Stress from work significantly worsens my symptoms, and I have developed anxiety about being far from bathrooms.

My quality of life is severely impacted, affecting my job performance and social relationships. Could this irritable bowel syndrome with diarrhea (IBS-D) lead to nutritional deficiencies or dehydration, and am I at risk for developing depression, social isolation, or more serious bowel diseases like inflammatory bowel disease (IBD) in the future?

Kindly advise.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

I hear your frustration, and I want you to know you are not alone in this. From what you have shared, your symptoms and test results suggest irritable bowel syndrome with diarrhea (IBS-D) with overlapping small intestinal bacterial overgrowth (SIBO) and lactose intolerance, which explains the urgency, bloating, and discomfort.

IBS itself does not progress to inflammatory bowel disease (IBD) or cancer. The low vitamin B12 you mentioned is likely from malabsorption linked to SIBO, and this can be corrected with supplementation. Stress and anxiety often create a vicious cycle with gut symptoms, so addressing mental health is just as important as treating the bowel.

Your normal colonoscopy is the most reassuring piece of evidence here. This makes a transition to a serious inflammatory bowel disease (IBD) like Crohn’s disease or ulcerative colitis very unlikely. The mildly elevated calprotectin is more consistent with the inflammation seen in SIBO and IBS, not the significant inflammation of IBD.

IBS can definitely affect mood, relationships, and confidence, but with the right plan, diet adjustment, probiotics, targeted antibiotics for SIBO like Rifaximin, antispasmodics, stress management, and monitoring vitamin B12, iron, and vitamin D levels, it is wise to continue ongoing support. Quality of life improves. You will not be stuck in this forever; this is a manageable step-by-step process.

I hope you are satisfied with my answer. For further queries, you can consult me at iCliniq.

Thank you.