Vomiting (Emesis)
Vomiting can pass quickly, but keeping fluids down and understanding the cause are important. Learn what may help, what to notice, and when to get medical care.
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Independent clinical validation is pending.
Quick Reference Facts
In simple words
Vomiting means bringing stomach contents up through the mouth. It often comes with nausea, but it can also happen suddenly. A short-lived episode is common; repeated vomiting can cause dehydration and deserves closer attention.
The important questions are how often it is happening, whether you can keep fluids down, what else you feel, and whether there may be a cause such as an infection, pregnancy, motion sickness, migraine, a medicine, alcohol or another health condition.
Common Causes
- A stomach or intestinal infection, food poisoning, or another short-term digestive illness
- Pregnancy, motion sickness, migraine, anxiety or strong smells
- A new medicine, alcohol, cannabis, or a treatment side effect
- Reflux, an ulcer, gallbladder or pancreatic conditions, or a blockage—less common causes that may need assessment
Clinical Red Flags
Seek urgent medical attention at an emergency department or primary care clinic if you present with any of the following symptoms:
- Get emergency help now for blood or coffee-ground-like material in vomit; severe or sudden abdominal pain; chest pain; a severe headache with a stiff neck; confusion, fainting, trouble breathing, or a serious injury.
- Seek urgent medical advice if you cannot keep fluids down, have very little or no urine, dark urine, marked dizziness, or ongoing vomiting that is not settling.
- Get prompt advice for vomiting in pregnancy, a child, an older or frail adult, or someone with diabetes, kidney disease, cancer treatment, or a weakened immune system.
Lifestyle & Diet Support
Start with small, frequent sips of water or an oral rehydration drink rather than a large drink at once. When fluids stay down, try a small amount of plain food if you feel ready. Rest, avoid alcohol and strong smells, and ask a pharmacist or clinician before using medicines—especially in pregnancy or for a child. Do not delay urgent care for the warning signs above.
Frequently Asked Questions
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Differential Diagnosis Matrix
Vomiting is a symptom rather than a diagnosis. A clinician may ask about meals, travel, sick contacts, pregnancy possibility, medicines, pain, headache, bowel changes and urine output. Testing is guided by the pattern and any warning signs.
Reference Citations & Evidence Sources
Clinical Reviews & Textbooks
- CIT-0131Clinical Review pending verification
- CIT-0132Clinical Review pending verification
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