Chagas disease can cause a sudden, brief illness (acute), or it may be a long-lasting (chronic) condition. Symptoms range from mild to severe, although many people don't experience symptoms until the chronic stage.
The acute phase of Chagas disease, which lasts for weeks or months, is often symptom-free. When signs and symptoms do occur, they are usually mild and may include:
- Swelling at the infection site
- Body aches
- Eyelid swelling
- Loss of appetite
- Nausea, diarrhea or vomiting
- Swollen glands
- Enlargement of your liver or spleen
Signs and symptoms that develop during the acute phase usually go away on their own. If left untreated, the infection persists and, in some cases, advances to the chronic phase.
Signs and symptoms of the chronic phase of Chagas disease may occur 10 to 20 years after initial infection, or they may never occur. In severe cases, however, Chagas disease signs and symptoms may include:
- Irregular heartbeat
- Congestive heart failure
- Sudden cardiac arrest
- Difficulty swallowing due to enlarged esophagus
- Abdominal pain or constipation due to enlarged colon
When to see a doctor
See your doctor if you live in or have traveled to an area at risk of Chagas disease and you have signs and symptoms of the condition, such as swelling at the infection site, fever, fatigue, body aches, rash and nausea.
June 07, 2014
- Rassi Jr A, et al. American trypanosomiasis (Chagas disease). Infectious Disease Clinics of North America. 2012;26:275.
- Papadakis MA, ed., et al. Current Medical Diagnosis & Treatment 2014. 53rd ed. New York, N.Y.: The McGraw-Hill Companies; 2014. http://www.accessmedicine.com/resourceTOC.aspx?resourceID=1. Accessed March 11, 2014.
- Ribeiro AL, et al. Diagnosis and management of Chagas disease and cardiomyopathy. Nature Reviews Cardiology. 2012;9:576.
- Chagas disease: Detailed FAQs. Centers for Disease Control and Prevention. http://www.cdc.gov/parasites/chagas/gen_info/detailed.html. Accessed March 12, 2014.
- Beryn C, et al. Trypanosoma cruzi and Chagas' Disease in the United States. Clinical Microbiology Review. 2011;24:655.
- Beryn C. Chagas disease: Management of acute disease, early chronic disease, and disease in immunocompromised hosts. http:www.uptodate.com/home. Accessed March 11, 2014.