If diarrhea is bloody, or if you have a fever or abdominal pain, see a health care provider immediately. Do not take over-the-counter drugs.
If diarrhea continues after several days despite home treatment, see your health care provider. He or she may prescribe an antibiotic. If diarrhea still persists, the health care provider may check for resistant bacteria or parasites.
Take a child to a doctor if symptoms include bloody diarrhea, dehydration, persistent vomiting, or fever higher than 102 Farenheit.
See a health care provider if nausea or vomiting is severe enough to prevent rehydration or if you feel woozy or have a rapid heart beat.