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In short What counts as diarrhea Why dehydration is the main risk When to contact a clinician When it is urgent Common questions SourcesMost diarrhea clears on its own in a day or two. See a clinician for signs of dehydration, blood or pus in the stool, or diarrhea lasting more than 2 days in an adult.
For children, the bar is lower: call the provider if diarrhea lasts more than 24 hours.
What counts as diarrhea
MedlinePlus defines it as loose, watery stools three or more times in one day. Acute diarrhea is common, usually lasts about one or two days, and goes away on its own. Diarrhea that lasts at least four weeks is considered chronic and can signal a chronic condition.
Why dehydration is the main risk
Diarrhea can cause dehydration, which can be serious, especially for children, older adults, and people with weakened immune systems. Drink fluids steadily. Signs of dehydration include dark urine or very little urine, a dry mouth, dizziness, and feeling very tired.
When to contact a clinician
MedlinePlus advises contacting a provider for signs of dehydration, for diarrhea lasting more than 2 days in an adult (more than 24 hours in a child), and for stools that contain blood or pus. Call right away for a newborn or infant with diarrhea.
When it is urgent
Go to the ER for severe belly pain, a high fever, confusion, fainting, or being unable to keep any fluids down.
Common questions
How long does diarrhea usually last?
Acute diarrhea usually lasts about one or two days and goes away on its own, according to MedlinePlus.
When should I see a doctor for diarrhea?
If you have signs of dehydration, blood or pus in your stool, or diarrhea lasting more than 2 days as an adult. For children, call if it lasts more than 24 hours.
What are the signs of dehydration?
Dark urine or very little urine, dry mouth, dizziness, and feeling very tired. It can be serious in children and older adults.
What should I drink?
Fluids in small, steady sips. Ask a pharmacist or clinician about oral rehydration solutions, especially for children.
Can an AI doctor help with diarrhea?
Pymander's AI doctor can ask follow-up questions and tell you whether to seek care today or manage at home. It is not a licensed doctor.