Poisoning

Systemic infections that may be associated with diarrhea include influenza, measles, dengue fever, HIV infection, malaria, and sepsis. Extraintestinal bacterial infections that may be associated with diarrhea include pneumonia, urinary tract infection, and meningitis.

Intraabdominal processes such as obstruction, intussusception, or appendicitis may present with diarrhea.

Milk intolerance is a rare cause of diarrhea in resource-limited settings; this diagnosis should not be applied unless milk refeeding causes a prompt increase in stool volume, weight loss, and worsening of dehydration.