Symptoms of Threadworms in Dogs

Source: PetWave, Updated on July 16, 2015
Threadworms

Symptoms of Threadworm Infection (Strongyloidosis)

Despite their small size, threadworms can cause severe illness in dogs. The symptoms of threadworm infection may include one or more of the following:

  • Diarrhea
  • Abdominal discomfort
  • Weakness
  • Lethargy
  • Dehydration
  • Coughing
  • Pneumonia
  • Skin inflammation (dermatitis; rash)

People can develop these symptoms as well. Young puppies are at great risk of developing threadworm infection due to the possibility that the bugs can be transmitted to the puppies from their mother’s milk. Newborns also have underdeveloped or immature immune systems. Puppies living in crowded conditions are especially vulnerable. Human infants are also extremely susceptible to threadworm infection. The diarrhea seen in newborns can be especially severe, ranging from watery to soft or semi-formed. It may or may not contain blood (hemorrhagic diarrhea), mucous (mucoid diarrhea), or both. In some cases, affected animals may be constipated, although this is much less common.

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