Cysticercosis (Pork Tapeworm Infection)
Steven Doerr, MD
Steven Doerr, MD, is a U.S. board-certified Emergency Medicine Physician. Dr. Doerr received his undergraduate degree in Spanish from the University of Colorado at Boulder. He graduated with his Medical Degree from the University Of Colorado Health Sciences Center in Denver, Colorado in 1998 and completed his residency training in Emergency Medicine from Denver Health Medical Center in Denver, Colorado in 2002, where he also served as Chief Resident.
Charles Patrick Davis, MD, PhD
Dr. Charles "Pat" Davis, MD, PhD, is a board certified Emergency Medicine doctor who currently practices as a consultant and staff member for hospitals. He has a PhD in Microbiology (UT at Austin), and the MD (Univ. Texas Medical Branch, Galveston). He is a Clinical Professor (retired) in the Division of Emergency Medicine, UT Health Science Center at San Antonio, and has been the Chief of Emergency Medicine at UT Medical Branch and at UTHSCSA with over 250 publications.
- Cysticercosis (pork tapeworm infection) facts
- What is cysticercosis?
- What causes cysticercosis?
- How is cysticercosis transmitted?
- What are cysticercosis symptoms and signs?
- How is cysticercosis diagnosed?
- What is the treatment for cysticercosis?
- What are the complications of cysticercosis?
- How is cysticercosis prevented?
Cysticercosis (pork tapeworm infection) facts
- Cysticercosis is a parasitic disease caused by ingesting the eggs of the pork tapeworm, Taenia solium.
- Humans are infected by ingesting raw or undercooked pork, and cysticercosis occurs after the ingestion of Taenia solium eggs.
- The symptoms of neurocysticercosis may include headaches, confusion, seizures, and vision changes.
- Cysticercosis is typically diagnosed based on the patient's symptoms and imaging study results. Blood work is sometimes useful.
- Cysticercosis may be treated with medications, including anthelmintics, corticosteroids, and anticonvulsants, while some patients may require surgery.
- Cysticercosis can lead to neurologic and ocular complications, and rarely death.
- Cysticercosis can be prevented by educating individuals about proper food handling, avoidance of raw or undercooked pork, and good personal hygiene.
What is cysticercosis?
Cysticercosis is a systemic parasitic infestation caused by ingesting the eggs of the pork tapeworm, Taenia solium. The symptoms of this illness are caused by the development of characteristic cysts (cysticerci) which most often affect the central nervous system (neurocysticercosis), skeletal muscle, eyes, and skin. Many individuals with cysticercosis never experience any symptoms at all (asymptomatic).
The tapeworm responsible for causing cysticercosis is endemic to many parts of the developing world, including Latin America, Asia, and sub-Saharan Africa. The World Health Organization (WHO) estimates that cysticercosis affects about 50 million people worldwide. The incidence of cysticercosis has increased in the United States due to increased immigration from developing countries, and it is estimated that about 1,800-2,000 new cases of cysticercosis are diagnosed annually in the United States. Neurocysticercosis is a leading cause of adult-onset seizures worldwide. The Centers for Disease Control and Prevention (CDC) has designated cysticercosis as one of five "neglected parasitic infections" in the United States, and the WHO has designated cysticercosis as one of 17 "neglected tropical diseases" worldwide.
Historically, the disease has been recognized since about 2000 B.C. by the Egyptians, and later it was described in pigs by Aristotle. The disease was also recognized by Muslim physicians and is thought to be the reason for Islamic dietary prohibition of eating pork. In the 1850s, German investigators described the life cycle of T. solium.
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