ComplicationsBy Mayo Clinic Staff
Giardia infection is almost never fatal in industrialized countries, but it can cause lingering symptoms and serious complications, especially in infants and children. The most common complications include:
Oct. 13, 2015
- Dehydration. Often a result of severe diarrhea, dehydration occurs when the body doesn't have enough water to carry out its normal functions.
- Failure to thrive. Chronic diarrhea from giardia infection can lead to malnutrition and harm children's physical and mental development.
Lactose intolerance. Many people with giardia infection develop lactose intolerance — the inability to properly digest milk sugar. The problem may persist long after the infection has cleared.
- Leder K, et al. Epidemiology, clinical manifestations, and diagnosis of giardiasis. http://www.uptodate.com/home. Accessed Sept. 1, 2015.
- Munoz FM. Treatment and prevention of giardiasis. http://www.uptodate.com/home. Accessed Sept. 1, 2015.
- Levinson W. Intestinal and urogenital protozoa. In: Review of Medical Microbiology and Immunology. 13th ed. New York, N.Y.: The McGraw-Hill Companies; 2014. http://www.accessmedicine.com. Accessed Sept. 1, 2015.
- Giardia. Centers for Disease Control and Prevention. http://www.cdc.gov/parasites/giardia/. Accessed Sept. 1, 2015.
- Longo DL, et al., eds. Protozoal intestinal infections and trichomoniasis. In: Harrison's Principles of Internal Medicine. 19th ed. New York, N.Y.: The McGraw-Hill Companies; 2015. http://accessmedicine.com. Accessed Sept. 1, 2015.