Treatment Approach for Intractable Diarrhea

Initial Assessment and Management

The management of intractable diarrhea requires a systematic approach starting with identifying and treating the underlying cause, while providing appropriate fluid and electrolyte replacement therapy as the cornerstone of treatment, according to the MMWR Recommendations and Reports 1
Consider nasogastric administration of oral rehydration solution in small volumes for patients with vomiting, as recommended by the MMWR Recommendations and Reports 1

Look for reducing substances in stool and dramatic increase in stool output with ORS administration, and consider specialized oral rehydration solutions or temporarily switching to IV therapy if glucose malabsorption is confirmed, as suggested by the MMWR Recommendations and Reports 1

Implement elimination diets under supervision of a dietitian to identify specific food triggers, as recommended by Gut 2, 3
Reintroduce foods systematically to identify specific triggers, according to Gut 3

Loperamide (4-12 mg daily) can be used either regularly or prophylactically for diarrhea control, as recommended by Gut 4
Codeine (30-60 mg, 1-3 times daily) may be tried but CNS effects can limit use, according to Gut 4
Cholestyramine may benefit a small number of patients but is often less well tolerated than loperamide, as noted by Gut 4

Dopamine receptor antagonists (haloperidol, metoclopramide, prochlorperazine, olanzapine) can be used for non-specific nausea and vomiting, as recommended by the Journal of the National Comprehensive Cancer Network : JNCCN 5
Add 5-HT3 antagonists (e.g., ondansetron) if symptoms persist, according to the Journal of the National Comprehensive Cancer Network : JNCCN 5
Consider adding corticosteroids if other measures fail, as suggested by the Journal of the National Comprehensive Cancer Network : JNCCN 5

Consider non-pharmacologic therapies such as acupuncture, hypnosis, and cognitive behavioral therapy for symptom management, as recommended by the Journal of the National Comprehensive Cancer Network : JNCCN 5
Cannabinoids may be beneficial in refractory cases, according to the Journal of the National Comprehensive Cancer Network : JNCCN 5

Failing to recognize glucose malabsorption, which has an incidence of approximately 1-8% during acute diarrhea, as noted by the MMWR Recommendations and Reports 1
Overlooking medication side effects as potential causes of intractable diarrhea, as warned by the Journal of the National Comprehensive Cancer Network : JNCCN 5