Diarrhea : When to see a doctor?

Seek immediate medical attention
In children, particularly young children, diarrhea — especially if combined with either fever or vomiting or both — can sometimes lead to dehydration. Call your doctor if your child's diarrhea doesn't improve after 24 hours or if your baby:

  • Hasn't had a wet diaper in three or more hours
  • Has a fever of more than 102 F (39 C)
  • Has bloody or black stools
  • Has a dry mouth or cries without tears
  • Is unusually sleepy, drowsy, unresponsive or irritable
  • Has a sunken appearance to the abdomen, eyes or cheeks
  • Has skin that doesn't flatten if pinched and released

Schedule a doctor's visit
In adults, diarrhea usually resolves on its own without any complications. See your doctor if:

  • Your diarrhea persists beyond two days without any sign of improvement
  • You become dehydrated — as evidenced by excessive thirst, dry mouth or skin, little or no urination, severe weakness, dizziness or lightheadedness, or dark-colored urine
  • You have severe abdominal or rectal pain
  • You have bloody or black stools
  • You have a fever of more than 102 F (39 C)

Source: mayoclinic.org