What exactly is giardia with runny stool?

Giardia=parasite: This is a bug that infects the small intestine and may cause diarrhea.See your dr for treatment.

Giardia: Giardiasis is a waterborne illness caused by Giardia parasite. Sx's – there may be no sx's or diarrhea, oily floating stool, gas, nausea, vomiting & abdominal cramps. If untreated it can cause bloody diarrhea, dehydration & weight loss. Diagnosis- via blood test for antibodies, stool antigen & checking stool for ova & parasites. Tx can include metronidazole, tinidazole & nitazoxanide.