Human infections by nonsegmented, elongated helminthic parasites (nematodes)
Pinworms are the most common human worm infection.
The adult stage infects the human intestinal tract. Larv...
E. vermicularis
Most infections are asymptomatic; nocturnal perianal itching is the most common symptom.
Abdominal pain is possible with high parasite burden.
T. trichiura
Symptomatic if ...
E. vermicularis (pinworm): pyrantel pamoate 11 mg/kg PO once (max 1 g); with a repeat dose 2 weeks later or albendazole 400 mg PO or mebendazole 100 mg PO once, repeat do...
Schär F, Trostdorf U, Giardina F, et al. Strongyloides stercoralis: global distribution and risk factors. PLoS Negl Trop Dis. 2013;7(7):e2288.
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B77.0 Ascariasis with intestinal complications
B77.9 Ascariasis, unspecified
187171000 Ascariasis with intestinal complications (disorder)
2435008 Ascariasis (disorder)
Ascariasis is the most common worldwide nematode infection.
E. vermicularis (pinworm) is the most common U.S. nematode infection.
Eosinophilia is best indicator of infection with N. amer...
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<bold>FIGURE 54-2</bold> <bold>Life cycle of <i>Ascaris lumbricoides</i> (human roundworm) and dog or cat roundworm (visceral larva migrans).</bold> Humans acquire these infections by ingesting embryonated roundworm eggs from the environment (1). After ingestion the parasites hatch in the upper intestine (2), cross the bowel wall (3), and enter the bloodstream. The human <i>Ascaris</i> (innermost set of arrows in the top half of the diagram) enters the ...
<bold>FIGURE 54-2</bold> <bold>Life cycle of <i>Ascaris lumbricoides</i> (human roundworm) and dog or cat ro...
<bold>Fig GI 27-11 <italic>Ascaris</bold>.</bold> The linear intestinal tract of the roundworm is filled with barium (arrow).<sup>29</sup>
<bold>Fig GI 27-11 <italic>Ascaris</bold>.</bold> The linear intestinal tract of the roundworm is filled with bariu...