Giardiasis

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Digestive system

Digestive system organs

Giardiasis

Institutional hygiene

Giardia; Traveler's diarrhea - giardiasis

• Diarrhea
• Abdominal pain
• Abdominal fullness; a gaseous or bloated sensation
• Abdomen swollen or distended
• Nausea
• Loss of appetite
• Vomiting
• Headache
• Low grade fever

The incubation period is 7 - 14 days. The acute phase is 2 - 4 weeks.

• Stool ova and parasites showing Giardia
• A positive Giardia EIA antibody test
• A small bowel biopsy showing Giardia
• A string test showing Giardia (rarely performed)

This disease may also alter the results of the following tests:

• Smear of duodenal aspirated fluid
• Small bowel tissue biopsy smear
• D-xylose absorption

Review Date: 10/27/2005
Reviewed By: Angelique Green, MD, Assistant Clinical Professor, UCSF School of Medicine, Director of Urgent Care Center, San Francisco General Hospital, San Francisco, CA. Review provided by VeriMed Healthcare Network.