A member asked:

18m old.diarrhea for over a week and now diarrhea and frequent vomiting 2nd week.stool,blood,and urine sample came back fine. what could be the cause?

5 doctors weighed in across 2 answers
Dr. Lori Semel answered

Specializes in Pediatrics

Sometimes: after a significant bowel infection, there is a temporary lactose intolerance caused by damaging the production of lactase enzyme in the bowel. In order to stop this cycle, I would eliminate all milk and dairy products for 5 days. Give BRATTY diet....bananas,rice, fresh apples or applesauce,tea or clear fluids (no apple juice), toast (cheerios, dry pasta), and vanilla or lemon yogurt.

Answered 8/8/2017

3.6k views

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Dr. Johanna Fricke answered

Specializes in Pediatrics - Developmental and Behavioral

See pediatrician for: re-evaluation for weight loss, dehydration, & overall health & development. Giardiasis, a parasitic intestinal infection, can last 2-4 weeks. It's diagnosed by stool exam for ova & parasites or stool antigen for Giardia. A stool sample to test for blood is also needed. Excessive juice intake can cause diarrhea, rarely vomiting. Lactose intolerance & food allergies are other possible causes.

Answered 9/29/2016

3.6k views

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