Key Takeaways
- Most short-term (acute) diarrhea lasts less than a week and goes away on its own.
- Diarrhea that lasts more than two weeks but less than four is called persistent, and diarrhea that lasts at least four weeks is called chronic.
- The Mayo Clinic advises adults to see a doctor if diarrhea lasts more than two days without improving.
- Blood or black stools, a fever over 102°F, severe belly or rectal pain, or signs of dehydration need prompt medical care.
- A gastroenterologist can find the cause using your health history, stool and blood tests, breath tests, or endoscopic exams.
- Newtown Gastroenterology's board-certified gastroenterologists see patients in Elmhurst, Flushing, Brooklyn, Bensonhurst, Manhattan, and Great Neck, and you can request an appointment online to get answers about diarrhea that won't go away.
How Long Does Diarrhea Last? Typical Timelines by Type
Almost everyone gets diarrhea now and then. In fact, the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) diarrhea definition and facts page notes that people in the United States have acute diarrhea about once a year. How long your symptoms last is one of the best clues to what's causing them.
Doctors group diarrhea into three types based on how long it lasts:
| Type | How Long It Lasts | Common Causes |
|---|---|---|
| Acute | Usually less than 1 week | Viral, bacterial, or parasitic infections; food poisoning; some medicines |
| Persistent | More than 2 weeks but less than 4 weeks | Infections that linger, such as giardia; medicine side effects; food intolerances |
| Chronic | At least 4 weeks (symptoms may be steady or come and go) | Irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), celiac disease, small intestinal bacterial overgrowth (SIBO), certain medicines |
Different medical groups describe these time frames a little differently, but the big picture is the same: the longer diarrhea lasts, the more likely it is that something other than a quick infection is going on.
According to the NIDDK overview of diarrhea diagnosis and treatment, if you've had diarrhea for less than seven days, your doctor usually won't need to search for a cause. Most acute cases improve with rest, fluids, and over-the-counter care.
Signs That Diarrhea Has Become Chronic
Chronic diarrhea is more common than many people think. NIDDK reports that up to 5% of people in the United States have it. Chronic diarrhea symptoms can include:
- Loose, watery stools three or more times a day for four weeks or longer
- Symptoms that come and go over weeks or months instead of clearing up
- Belly cramps, bloating, or a strong, sudden urge to use the bathroom
- Weight loss you can't explain
- Feeling tired or weak
Over time, chronic diarrhea can lead to malabsorption. This means your body isn't absorbing enough nutrients from the food you eat. Newtown Gastroenterology diagnoses and treats many conditions behind long-lasting diarrhea, including IBS, Crohn's disease, ulcerative colitis, and SIBO, as part of its care for lower gastrointestinal (GI) conditions.
Red Flag Symptoms: When to See a Doctor for Diarrhea
Some symptoms mean you shouldn't wait it out. The Mayo Clinic guide on when to see a doctor for diarrhea lists the following warning signs.
Warning Signs in Adults
Schedule a doctor's visit if an adult has:
- Diarrhea that lasts more than two days without improving
- Signs of dehydration, such as extreme thirst, dry mouth or skin, little or no urine, severe weakness, dizziness, or dark urine
- Severe belly or rectal pain
- Bloody or black stools
- A fever over 102°F (39°C)
Warning Signs in Children
Children can become dehydrated more quickly. Get medical care for a child who has:
- Diarrhea that doesn't improve after 24 hours
- No wet diaper in three or more hours
- A fever over 102°F (39°C)
- Bloody or black stools
- A dry mouth, or cries without tears
- Unusual sleepiness, drowsiness, or irritability
If someone faints, becomes confused, or seems very ill, call 911 or go to the nearest emergency room.
What a Gastroenterologist Evaluates During a Visit
A gastroenterologist is a doctor who specializes in the digestive system. When you visit Newtown Gastroenterology for diarrhea evaluation and treatment, your appointment will usually start with a conversation about:
- When your diarrhea started and how often it happens
- Your medical history and any family history of digestive disease
- What you eat and drink
- Recent travel
- Medicines you've started or changed
Based on that conversation, your gastroenterologist may recommend stool analysis, blood tests, breath tests, or endoscopic exams. Endoscopic exams use a thin, flexible tube with a camera to look inside the digestive tract. Newtown Gastroenterology offers several types of specialized testing for digestive health, including upper endoscopy and capsule endoscopy.
Treatment depends on the cause. Your plan may include changes to your diet, hydration strategies, probiotics, or medicines that slow diarrhea, treat infection, or calm inflammation.
How to Prepare for Your Appointment?
A little preparation helps your visit go further. Before your appointment:
- Write down when your symptoms started and how many times a day you have diarrhea.
- Note any blood, mucus, or color changes in your stool.
- Bring a list of all medicines and supplements you take.
- Jot down foods or drinks that seem to make symptoms worse.
Why Early Evaluation Can Prevent Complications
Getting checked sooner rather than later can protect your health in several ways:
- Preventing dehydration: Loose stools pull more fluid and electrolytes (minerals like sodium and potassium that help your body work properly) out of your body. Mayo Clinic notes that dehydration is especially dangerous for children, older adults, and people with weakened immune systems.
- Treating infections before they linger: Some infections, like giardia or C. difficile, can lead to chronic diarrhea if they aren't treated.
- Finding chronic conditions early: Conditions like IBD need long-term management to control inflammation and prevent flare-ups.
- Protecting your nutrition: Treating the cause of chronic diarrhea helps your body absorb the nutrients it needs.
Get Answers About Lingering Diarrhea at Newtown Gastroenterology
Most diarrhea clears up within a few days, but symptoms that last longer, keep returning, or come with red flags deserve a closer look. Newtown Gastroenterology's board-certified specialists can find out what's behind your symptoms and help you feel like yourself again.
Don't let ongoing diarrhea disrupt your life. Request an appointment with Newtown Gastroenterology online for a diarrhea evaluation at the Great Neck, NY office or any of the practice's New York City locations.
Frequently Asked Questions
How long does diarrhea last for most adults?
Most acute diarrhea lasts less than a week and goes away on its own. Diarrhea that lasts more than two weeks is called persistent, and diarrhea that lasts four weeks or longer is called chronic.
When should I see a doctor for diarrhea?
Adults should see a doctor if diarrhea lasts more than two days without getting better. Get care right away for blood in the stool, black stools, a fever over 102°F, severe belly or rectal pain, or signs of dehydration. For children, get care if diarrhea doesn't improve within 24 hours.
What are chronic diarrhea symptoms?
Chronic diarrhea symptoms include loose, watery stools three or more times a day for at least four weeks. Symptoms may be steady or come and go, and they can come with cramping, bloating, urgency, tiredness, or weight loss.
Where can I find a diarrhea doctor in New York?
Newtown Gastroenterology has board-certified gastroenterologists who evaluate and treat diarrhea at offices in Elmhurst, Flushing, Brooklyn, Bensonhurst, Manhattan, and Great Neck. You can request an appointment online.
Does Newtown Gastroenterology have a gastroenterologist in Great Neck, NY?
Yes. Newtown Gastroenterology'sGreat Neck office is located at 440-450 Northern Boulevard, Great Neck, NY 11021, and is open Monday through Saturday.
