Can I get treated online for diarrhea that won't stop?

Yes. A licensed provider on Ondoc reviews your symptoms and, when appropriate, prescribes treatment for the underlying cause — most commonly Cyclosporiasis or Gastroenteritis / stomach flu.

How fast will I hear back?

Most online visits are reviewed in under 24 hours. Refills are often same-day.

Diarrhea that won't stop

Watery diarrhea lasting more than 7–10 days — especially after eating fresh berries, cilantro, basil, or bagged salad — can be cyclosporiasis, a parasitic infection missed by routine stool tests. A provider can order cyclospora PCR and prescribe Bactrim online.

Also called: watery diarrhea for a week · diarrhea for 10 days · prolonged diarrhea · chronic diarrhea after produce

Medically reviewed by Dr. Ikechukwu Ogbu, MD

MD · Board-Certified, Internal Medicine · Last reviewed July 2026

Seek urgent care or the ER if you have:

Symptoms that are sudden, severe, or rapidly worsening
High fever (over 103°F / 39.4°C) that doesn't respond to treatment
Chest pain, trouble breathing, fainting, or confusion
Signs of dehydration — dizziness, dark urine, unable to keep fluids down
Symptoms in someone who is pregnant, immunocompromised, or over 65

What diarrhea that won't stop could be

The most common causes a clinician considers. This isn't a diagnosis — it's the differential a provider works through with you.

Cyclosporiasis

Cyclosporiasis is one of the more common causes of diarrhea that won't stop. A provider can confirm with the right history, exam, or labs — and start treatment the same day when appropriate.

Gastroenteritis / stomach flu

Gastroenteritis / stomach flu is one of the more common causes of diarrhea that won't stop. A provider can confirm with the right history, exam, or labs — and start treatment the same day when appropriate.

Giardiasis

Giardiasis is one of the more common causes of diarrhea that won't stop. A provider can confirm with the right history, exam, or labs — and start treatment the same day when appropriate.

Irritable bowel syndrome (IBS)

Irritable bowel syndrome (IBS) is one of the more common causes of diarrhea that won't stop. A provider can confirm with the right history, exam, or labs — and start treatment the same day when appropriate.

Typical workup

What a clinician usually orders or asks about when someone presents with diarrhea that won't stop.

Focused history: timing, triggers, severity, and prior treatments related to "diarrhea that won't stop"
Targeted physical exam of the involved system
Rule-in / rule-out workup for the most likely causes: Cyclosporiasis, Gastroenteritis / stomach flu, Giardiasis
Labs, imaging, or referral only when the answer will change management

When to see a clinician

Symptoms have lasted more than a few days without improving, or keep coming back
You're not sure if this needs antibiotics, prescription treatment, or watchful waiting
You have a chronic condition (diabetes, heart disease, immunocompromised) that raises the stakes
You want a same-day plan without a trip to urgent care