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What It Means

What Vomiting Means

Vomiting is the forceful emptying of stomach contents through the mouth. It happens when signals involving the brain, stomach, and digestive tract coordinate muscle contractions that push stomach contents upward and out.

Nausea is the uncomfortable feeling that you may vomit, while retching is the heaving or gagging motion that may happen before vomiting without bringing anything up. Vomiting may also occur with stomach discomfort, sweating, dizziness, diarrhea, or a general feeling of illness; the terms puking and vomiting describe the same physical process.

Emergency Warning Signs

When Vomiting May Be an Emergency

SEEK URGENT HELP

Get emergency care for serious warning signs

Call emergency services or seek emergency care for vomiting blood or green material, severe or worsening abdominal pain, a stiff neck or severe headache, confusion, fainting, breathing difficulty, or signs of severe dehydration. Get urgent help for suspected poisoning or vomiting after a serious injury, and do not try to make yourself vomit as a way of treating poisoning.

Possible Causes

Possible Causes of Vomiting

  • Viral gastroenteritis and food poisoning can irritate the digestive tract and cause sudden vomiting, often with diarrhea or stomach cramps.
  • Motion sickness, migraine, or intense pain can activate brain signals that trigger nausea and vomiting.
  • Pregnancy-related nausea and vomiting are common, especially early in pregnancy, although severe symptoms need medical advice.
  • Overeating, alcohol, or other dietary triggers can temporarily upset the stomach.
  • Medication or treatment side effects, including some pain medicines and cancer treatments, can cause nausea and vomiting.
  • Cyclic vomiting syndrome causes repeated, stereotyped episodes separated by periods of feeling well.
  • Appendicitis, gallbladder disease, pancreatitis, or another abdominal condition can cause vomiting with pain and other symptoms.
  • A bowel obstruction or another problem preventing normal intestinal passage may cause persistent vomiting and abdominal swelling or pain.
  • Diabetic ketoacidosis or another metabolic emergency can cause vomiting along with marked illness, thirst, or changes in alertness.
  • Head injury, poisoning, or a medication overdose can trigger vomiting and requires prompt medical assessment.

Duration Triage Table

What Vomiting May Mean by Duration

PatternWhat it may suggestCare focus
AcuteA short episode from infection, food poisoning, medication, or another sudden triggerPrioritize fluids and watch for emergency warning signs
SubacuteVomiting that continues beyond the expected course or returns over daysArrange medical advice to assess dehydration and the cause
Chronic or recurrentRepeated episodes, a persistent condition, or a recurring vomiting cycle such as cyclic vomiting syndromeSchedule clinical evaluation, especially with weight loss or reduced intake

Relief Tips

How to Feel Better After Vomiting

  • Take small, frequent sips of water or an oral rehydration solution rather than drinking a large amount at once.
  • Rest and restart light, bland foods gradually when you can keep fluids down.
  • Avoid alcohol and foods that clearly trigger or worsen symptoms.
  • Do not try to make yourself vomit; contact poison control or emergency services for possible poisoning instead.

When to See a Doctor

When to See a Doctor for Vomiting

  • Seek prompt advice if you cannot keep fluids down or are urinating much less than usual.
  • Arrange assessment if vomiting lasts longer than expected, keeps returning, or causes unexplained weight loss.
  • Contact a clinician for significant abdominal pain, fever, or other concerning symptoms.
  • Seek advice sooner for vomiting in infants, older adults, pregnant people, or those with serious medical conditions.

A clinician may review the pattern of vomiting, associated symptoms, medicines, and hydration status. Depending on the findings, they may recommend relevant tests to identify the cause and guide treatment.

Complications

Complications of Vomiting

  • Dehydration can cause thirst, dizziness, weakness, and reduced urination.
  • Electrolyte abnormalities, or loss of body salts, can lead to muscle cramps, abnormal heart rhythms, or worsening weakness.
  • Repeated retching can irritate or tear the lining of the esophagus and may cause bleeding.
  • Frequent exposure to stomach acid can damage tooth enamel.
  • Prolonged vomiting can result in inadequate nutrition and unintended weight loss.

Diseases & Conditions

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