Ascariasis history and symptoms
|
Ascariasis Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Ascariasis history and symptoms On the Web |
|
American Roentgen Ray Society Images of Ascariasis history and symptoms |
|
Risk calculators and risk factors for Ascariasis history and symptoms |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Imtiaz Ahmed Wani, M.B.B.S
History and Symptoms
Patients can remain asymptomatic for very long periods of time. As larval stages travel through the body, they may cause visceral damage, peritonitis and inflammation, enlargement of the liver or spleen, toxicity, and pneumonia. A heavy worm infestation may cause nutritional deficiency; other complications, sometimes fatal, include obstruction of the bowel by a bolus of worms (observed particularly in children) and obstruction of the bile or pancreatic duct. More than 796 Ascaris lumbricoides worms weighing 550 g [19 ounces] were recovered at autopsy from a 2-year-old South African girl. The worms had caused torsion and gangrene of the ileum, which was interpreted as the cause of death[2].
Ascaris takes most of its nutrients from the partially digested host food in the intestine. There is limited evidence that it can also pierce the intestinal mucous membrane and feed on blood, but this is not its usual source of nutrition.[3] As a result, Ascaris infection does not produce theanemia associated with some other roundworm infections.
References
de:Spulwurm hu:Orsóférgek io:Askaridiko id:Askariasis it:Ascaridiasi nl:Spoelworm ps:اسکاريس لومبريکويډېس sk:Hlísta detská