When should I go to the ER for vomiting that won't stop?

When to Go to the ER for Vomiting That Won’t Stop

Persistent vomiting can be more than just an uncomfortable nuisance. While most cases clear up on their own or with simple home care, certain signs and symptoms require immediate medical attention. Knowing when to go to the Emergency Room (ER) can help you—or a loved one—get timely treatment and prevent serious complications.

Why Persistent Vomiting Matters
Vomiting is your body’s way of forcefully expelling stomach contents. Occasional episodes from food poisoning or a stomach bug usually pass within a day or two. But when vomiting doesn’t stop, you risk:

• Dehydration and electrolyte imbalances
• Nutrient deficiencies
• Tear or damage to the esophagus
• Aspiration (breathing vomit into the lungs)
• Underlying serious illness

Key Warning Signs: When to Head to the ER
If you or someone you care for has ongoing vomiting and any of the following occur, go to your nearest ER right away:

• Continuous vomiting for more than 12–24 hours
• Signs of severe dehydration

• Little to no urination for 8 hours
• Dizziness upon standing
• Rapid heartbeat or breathing
• Sunken eyes or dry mouth
  • Blood in vomit (bright red or “coffee-ground” appearance)
  • Severe, sudden abdominal pain
  • Confusion, lethargy or fainting
  • High fever (over 102°F/39°C) alongside vomiting
  • Inability to keep even small sips of water down
  • Severe headache with neck stiffness or sensitivity to light
  • Chest pain or pressure
  • Vomiting after head injury
  • Suspected poisoning or overdose
  • Pregnancy-related concerns (especially extreme thirst, abdominal pain, or signs of dehydration)

Special Populations at Higher Risk
Infants, young children and older adults dehydrate more quickly. You should go to the ER immediately if:

• An infant under 12 months vomits repeatedly and shows no wet diapers for 6–8 hours.
• A child refuses all fluids or has dry diapers for 6–8 hours.
• An older adult has dizziness, confusion or a rapid heart rate from vomiting.

Common Causes of Persistent Vomiting
Understanding potential triggers can help you explain symptoms to medical staff:

• Gastroenteritis (viral or bacterial stomach bug)
• Food poisoning
• Medication side effects (including chemotherapy)
• Migraine or severe headache
• Bowel obstruction
• Pancreatitis or gallbladder issues
• Inner ear or vestibular problems
• Increased intracranial pressure (e.g., from head injury)
• Metabolic disturbances (e.g., diabetic ketoacidosis)
• Pregnancy-related hyperemesis gravidarum

Home Care Tips While You Decide
If your symptoms are mild and you’re not showing any red-flag signs, you can try these steps for a few hours. If vomiting worsens or warning signs appear, seek ER care without delay.

1. Sip small amounts of clear fluid frequently.
2. Avoid solid food until vomiting subsides for several hours.
3. Once you tolerate liquids, try bland foods (toast, rice, bananas, applesauce).
4. Rest in an upright or propped position to reduce nausea.
5. Avoid strong odors, smoke or overly warm rooms.
6. Over-the-counter antiemetics (e.g., dimenhydrinate) can help—but talk to a pharmacist or doctor first.

When to Seek Urgent Office Care vs. ER
Not every case of persistent vomiting requires an ER visit. You might call or see your primary care provider if:

• You’ve vomited for more than 48 hours but feel stable and hydrated.
• You can keep down clear liquids and have no alarming symptoms.
• You have a known chronic condition and need prescription anti-vomit medication.

However, if you’re ever unsure whether symptoms are serious, it’s better to err on the side of caution. You can also try a free, online symptom check, using the doctor approved Ubie Symptom Checker to get guidance on next steps and whether ER care is needed.

What to Expect at the ER
When you arrive at the ER for persistent vomiting, the medical team will:

1. Take a detailed history: onset, frequency, appearance of vomit, related symptoms
2. Perform a physical exam, including vital signs and abdominal evaluation
3. Run blood and urine tests to check for dehydration and electrolyte imbalances
4. Get imaging (X-ray, CT scan) if a blockage or injury is suspected
5. Administer IV fluids and anti-nausea medications
6. Admit you for further care or send you home with instructions

Preventing Future Episodes
While some causes of vomiting can’t be fully prevented (like viral infections), you can lower your risk by:

• Practicing good hand hygiene
• Avoiding foods past their expiry date or from unreliable sources
• Eating small, frequent meals if prone to motion sickness or migraines
• Staying hydrated, especially in hot weather or after exercise
• Taking medications exactly as prescribed

When in Doubt, Talk to a Doctor
Persistent vomiting can be a symptom of a simple stomach bug—or it could signal something more serious. If you ever experience life-threatening or concerning symptoms, don’t hesitate to call 911 or go to the ER.

For non-emergency situations, consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker to help you decide if you should see a healthcare provider. And always speak to a doctor about anything that could be life-threatening or serious.