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Giardiasis (cont.)

When to Seek Medical Care

When to call the doctor

Contact a doctor for appropriate diagnosis and treatment if your symptoms are consistent with giardiasis, if symptoms last despite treatment, or if any new symptoms develop. People should not automatically go to the hospita for these conditions. Seek medical care for sure, however.

When to go to an urgent care clinic or a hospital.

  • Profuse watery diarrhea with dehydration
    • Signs and symptoms of dehydration in adults include being thirsty, feeling weak, decreased urination, no saliva or dry mouth, no tears, fast heart rate, and light-headedness.
    • Children with dehydration may also get irritable or sleepy.
  • Passing many small-volume stools with blood or mucus
  • Fever greater than 100.4 F (38 C)
  • More than 6 unformed stools in 24 hours
  • Illness longer than 48 hours
  • Diarrhea with severe abdominal pain in anyone older than 50 years
  • Diarrhea in anyone older than 70 years
  • Diarrhea in people with weakened immune systems such as those with AIDS, people receiving chemotherapy, or transplant recipients
Medically Reviewed by a Doctor on 12/15/2014
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Giardiasis »

Giardia lamblia was originally identified by von Leeuwenhoek in the 1600s and was first recognized in human stool byVilem Dusan Lambl (1824-1895) in 1859and by Alfred Giard (1846-1908) after whom it is named.

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