Giardiasis: diagnosis and treatment

Giardiasis is the number one parasite-caused gastrointestinal illness in the United States. It can be acquired through various water sources or the fecal-oral route. The detection and treatment of giardiasis can be difficult. Nurse practitioners, as primary health care providers, often see patients presenting with gastrointestinal complaints. These complaints could represent one of many illnesses, including giardiasis. Presented is a review of the background and current information available on Giardia necessary for appropriate evaluation and care of patients with suspected giardiasis.