Trichinosis

Trichinosis
Synonyms	trichinellosis, trichiniasis
Trichinella larvae in pressed bear meat, partially digested with pepsin. The classic coil shape is visible.
Classification and external resources
Specialty	Infectious disease
ICD-10	B75
ICD-9-CM	124
DiseasesDB	13326
MedlinePlus	000631
Patient UK	Trichinosis
MeSH	D014235
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Trichinosis is a parasitic disease caused by roundworms of the Trichinella type. During the initial infection invasion of the intestines can result in diarrhea, abdominal pain, and vomiting. Migration of larvae to muscle, which occurs about a week after being infected, can cause swelling of the face, inflammation of the whites of the eyes, fever, muscle pains, and a rash. Minor infection may be without symptoms. Complications may include inflammation of heart muscle, central nervous system involvement, and inflammation of the lungs.

Trichinosis is mainly spread when undercooked meat containing Trichinella cysts is eaten. Most often this is pork but can also occur from bear and dog meat. Several subtypes of Trichinella can cause disease with T. spiralis being the most common. After being eaten the larvae are released from their cysts in the stomach. They then invade the wall of the small intestine, where they develop into adult worms. After 1 week, the females release new larvae that migrate to voluntarily controlled muscles where they form cyst. The diagnosis is usually based on symptoms and confirmed by finding specific antibodies in the blood or larvae on tissue biopsy.

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Wikipedia