The clinical evaluation of a child with vomiting or diarrhea rests on a targeted history (fever, blood or mucus in stool, exposure to farm animals or reptiles, suspicious or undercooked foods, recent travel, recent antibiotic use) that narrows the differential between bacterial, viral, and antibiotic-associated etiologies, since certain exposures and stool characteristics are associated with specific pathogens. The corresponding physical exam prioritizes assessment of hydration status (mucous membrane moisture, tear production, skin tenting as a late finding), signs of systemic infection, abdominal findings such as rebound and guarding, and perianal inspection for signs suggestive of inflammatory bowel disease. This belongs to pediatric gastroenterology, relating the history-and-physical-exam framework to the broader discipline of diagnosing infectious and inflammatory causes of diarrheal illness in children.
The clinical evaluation of a child with vomiting or diarrhea rests on a targeted history (fever, blood or mucus in stool, exposure to farm animals or reptiles, suspicious or undercooked foods, recent…