Differential Diagnosis for Watery Stool after Travel to Guatemala
- Single most likely diagnosis
- Traveler's diarrhea (most commonly caused by Enterotoxigenic Escherichia coli (ETEC)): This is the most likely diagnosis due to the high incidence of traveler's diarrhea in individuals traveling to developing countries, including Guatemala. The symptoms of watery stool are consistent with this diagnosis.
- Other Likely diagnoses
- Giardiasis: This is a common cause of watery diarrhea in travelers, especially those who have consumed contaminated water or food.
- Viral gastroenteritis: Viruses such as norovirus and rotavirus can cause watery diarrhea in travelers.
- Bacterial gastroenteritis (other than ETEC): Other bacteria such as Salmonella, Shigella, and Campylobacter can also cause watery diarrhea in travelers.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Cholera: Although rare in travelers, cholera is a life-threatening illness that requires prompt treatment. It is essential to consider this diagnosis, especially if the traveler has consumed contaminated food or water.
- Dysentery (caused by Shigella or Salmonella): While not typically life-threatening, dysentery can lead to severe dehydration and electrolyte imbalances if left untreated.
- Cyclosporiasis: This parasitic infection can cause severe and prolonged diarrhea, and is often associated with travel to developing countries.
- Rare diagnoses
- Cryptosporidiosis: This parasitic infection can cause watery diarrhea, but is less common than other causes.
- Amoebiasis: This parasitic infection can cause dysentery or watery diarrhea, but is relatively rare in travelers.
- Intestinal parasites (such as hookworm or roundworm): These parasites can cause gastrointestinal symptoms, including watery diarrhea, but are less common in travelers.