Which clinical history findings are characteristic of Dientamoeba fragilis infection?

Updated: Jul 31, 2018
  • Author: Maria A Garcia Fernandez, MD; Chief Editor: Russell W Steele, MD  more...
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Abdominal pain and diarrhea are the most common symptoms in patients with Dientamoeba fragilis infection. [6] In acute infection, diarrhea is the predominant symptom, which lasts 1-2 weeks. [7] Diarrheal history may vary, with either consistently frequent stools (1-4 stools per day) or episodic occurrence of diarrhea. Stools are greenish brown, and their consistency varies from watery to sticky. Occasionally, mucus is noted in the stools, but hematochezia is unusual. Chronic infection is diagnosed when duration of symptoms is greater than 1-2 months. The most common symptom in chronic infection is abdominal pain.

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