| Re: stomach bleeding
There is a parasitic roundworm, species ascaris lumbricoides, that causes ascariasis in humans. After a human has ingested its egs via fecal-oral contact, the eggs, after lodging in the small intestines or lungs, develop into adult worms inside the host. The adult worm then emerges from the anus, mouth, nose or navel.
Could you possibly have this infection? Without treatment, the worms can cause intestinal obstruction or pneumonia, but the treatment is widely available - mebendazole or piperazine. Easy for a medical practitioner to diagnose by looking for eggs in the stool. This kind of worm infection is the most widespread in the world, and is common in the U.S.A.
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