Persistent diarrhea is defined as symptoms lasting more than 2 weeks, while chronic diarrhea lasts longer than 30 days and can be divided into several subgroups including surgical, endocrine, HIV, bacterial, parasitic, chronic conditions and medications.
Giardia lamblia is the most common parasitic cause of chronic diarrhea. While infectious etiologies are more likely in underdeveloped nations, autoimmune conditions (e.g., celiac disease) have increased in developing countries. Finally, patients experience chronic diarrhea due to the side effects of medications.
Diarrhea Dehydration Abdominal pain Antibiotics Celiac Parasite HIV
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