title: 25-year-old man with abdominal pain, nausea, and fatigue.
authors.affiliation: Mayo School of Graduate Medical Education, Mayo Clinic College of Medicine, Rochester, Minn 55905, USA.
authors.forename: Bilal
authors.initials: B
authors.lastname: Aijaz
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Beckman
mesh_terms: D015746:Abdominal Pain / Q000469:parasitology; D000328:Adult; D000981:Antiprotozoal Agents / Q000627:therapeutic use; D003937:Diagnosis, Differential; D005221:Fatigue / Q000469:parasitology; D005873:Giardiasis / Q000175:diagnosis* / Q000188:drug therapy; D006801:Humans; D008297:Male; D008795:Metronidazole / Q000627:therapeutic use; D009325:Nausea / Q000469:parasitology
chemical_list: D000981:Antiprotozoal Agents; D008795:Metronidazole