Trichinosis history and symptoms

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Danitza Lukac


Trichinosis initially involves the intestines. Symptoms include nausea, heartburn, dyspepsia, and diarrhea. The severity of symptoms depends on the number of worms ingested. As the worms encyst in different parts of the human body, other manifestations may occur, such as headache, fever, chills, cough, eye swelling, joint pain and muscle pain, and itching. A positive history of gastroenteritis symptoms, muscle pain and fever and recent ingestion of undercooked meat such as pork, wild boar or bear is suggestive of trichinosis.[1][2][3]


Trichinosis is mainly caused by eating undercooked meat such as pork wild boar and bear, containing encysted larval Trichinella.


Common symptoms are:[1][2][3]

Enteral/Intestinal phase:

Parenteral/Muscle phase:


  1. 1.0 1.1 Trichinosis. Wikipedia. Accessed on January 22, 2016
  2. 2.0 2.1 Trichinellosis. CDC. Accessed on January 26, 2016
  3. 3.0 3.1 Gottstein B, Pozio E, Nöckler K (2009). "Epidemiology, diagnosis, treatment, and control of trichinellosis". Clin Microbiol Rev. 22 (1): 127–45, Table of Contents. doi:10.1128/CMR.00026-08. PMC 2620635. PMID 19136437.