![]() Findings include abdominal pain and diarrhea, rash, pulmonary symptoms (including cough and wheezing), and eosinophilia. read more ), and Strongyloides ( strongyloidiasis Strongyloidiasis Strongyloidiasis is infection with Strongyloides stercoralis. Symptoms may include abdominal pain, diarrhea, and, in heavy infections, anemia and undernutrition. read more, Trichuris ( trichuriasis Trichuriasis Trichuriasis is infection with Trichuris trichiura. Symptoms include rash at the site of larval entry and sometimes abdominal pain or other. read more ), hookworms Hookworm Infection Ancylostomiasis is infection with the hookworm Ancylostoma duodenale or Necator americanus. ![]() Hundreds of millions of humans are infected with nematodes that live in the intestines and are transmitted by ova or larvae in feces the most common are Ascaris ( ascariasis Ascariasis Ascariasis is infection with Ascaris lumbricoides or occasionally Ascaris suum (a closely related parasite of pigs). Depending on the species, different stages in the life cycle are infectious to humans. Nematodes have a body cavity, distinguishing them from tapeworms and flukes. Nematodes are nonsegmented cylindric worms ranging from 1 mm to 1 m in length. Although a few parasites (eg, Clonorchis sinensis) can survive for decades in humans, many species have life spans of only a few years or less. If a person moves from an endemic area, the number of adult worms diminishes over time. The worm burden depends on the degree of environmental exposure, parasite factors, and the host’s genetically determined immune responses. read more by migrating into and obstructing the pancreatic duct. The most common triggers are gallstones and alcohol intake. read more causes life-threatening acute pancreatitis Acute Pancreatitis Acute pancreatitis is acute inflammation of the pancreas (and, sometimes, adjacent tissues). The severity of helminthic infections usually correlates with the worm burden, but there are exceptions as when a single ascaris Ascariasis Ascariasis is infection with Ascaris lumbricoides or occasionally Ascaris suum (a closely related parasite of pigs). ![]()
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