When should I go to the ER for stomach flu?
Go to the ER for stomach flu when you cannot keep fluids down for more than a day, show signs of dehydration, or have blood in vomit or stool, a fever above 103°F, or severe belly pain. Mild, stable cases can usually be managed at home, by telemedicine, or with your primary care doctor.
Making the Call: ER, Telemedicine, or Home
Most stomach flu never needs an ER. The decision comes down to two things: how much fluid you are losing and whether the picture still looks like a simple virus. Use the timeline and scenarios below to place yourself.
Go to the ER Now
Choose the ER, day or night, if:
- You cannot keep any liquids down for more than 24 hours, or vomiting and diarrhea have lasted beyond two to three days.
- You have signs of dehydration — no urination for 8+ hours, dizziness or fainting, racing heartbeat, sunken eyes, confusion, or unusual drowsiness. When fluid loss is this severe, sipping is not enough; you need IV fluids.
- There is blood in your vomit or stool, or black, tarry stools.
- You have a fever above 103°F, a stiff neck with severe headache, or severe or constant abdominal pain — especially lower-right pain that could be appendicitis.
- The person affected is an infant, an older adult, pregnant, or immunocompromised and is not keeping fluids down.
Call 911 instead of driving for confusion, fainting, chest pain, or trouble breathing.
When Telemedicine or Urgent Care Makes Sense
If you are keeping some fluids down, still urinating, and have no red flags, you likely do not need an ER. Reasonable first steps:
- Telemedicine / online urgent care is a good starting point for mild symptoms. A clinician can confirm it is likely viral, recommend over-the-counter measures, and tell you which warning signs should prompt an in-person visit. Bellaire ER offers telemedicine for exactly these cases.
- Your primary care doctor or an urgent care clinic is appropriate for mild, stable symptoms, or for a child or older adult who is drinking and alert.
Recovering Safely at Home
For mild cases, rest and take small, frequent sips of water, clear broth, or an oral rehydration solution rather than large amounts at once. Avoid alcohol, caffeine, and very sugary drinks. Return to bland foods gradually. If symptoms worsen or any red flag appears, move up to emergency care.
For a complete guide, see our stomach flu page. Bellaire ER is open 24/7 for walk-ins at 5302 Bellaire Blvd. Call (713) 660-0001 for guidance on whether your symptoms warrant an ER visit.