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What It Means

What Nausea Means

Nausea is an uncomfortable, queasy feeling in the stomach or upper abdomen that may create an urge to vomit. The nausea meaning is a symptom, not a disease, and it can occur with or without vomiting. Some people also notice a loss of appetite, sweating, dizziness, or a generally nauseous feeling.

Emergency Warning Signs

When Nausea May Be an Emergency

GET URGENT HELP

Nausea with serious warning signs

Seek emergency help for nausea with chest pain, severe or sudden abdominal pain, confusion, fainting, a severe headache, a stiff neck, trouble breathing, or signs of severe dehydration. Urgent assessment is also needed for blood or coffee-ground material in vomit, green vomit, possible poisoning, or severe vomiting during pregnancy. If you cannot keep fluids down, contact urgent medical services promptly.

Possible Causes

Possible Causes of Nausea

Nausea has many possible causes, and the timing, triggers, related symptoms, and your medical history can help a clinician identify the likely explanation. Nausea after eating, for example, may have a different cause from nausea linked with motion, illness, or a medicine.

  • A viral stomach infection or food poisoning can cause nausea, often with vomiting, diarrhea, stomach cramps, or fever.
  • Overeating, indigestion, reflux, or eating certain foods can lead to nausea after eating.
  • Motion sickness may cause nausea when traveling by car, boat, plane, or another moving vehicle.
  • Migraine can cause nausea, sometimes along with headache, sensitivity to light, or sensitivity to sound.
  • Pregnancy-related morning nausea is common, particularly early in pregnancy, although it can occur at other times of day.
  • Anxiety, stress, fear, or other strong emotions may cause or worsen nausea.
  • Medication or treatment side effects, including those from some pain medicines or cancer treatments, can trigger nausea.
  • Alcohol or other substance use can irritate the stomach or affect the brain areas involved in nausea.
  • Less common but important causes include appendicitis, bowel obstruction, or heart problems.

Duration Triage Table

What Nausea May Mean by Duration

DurationWhat it may suggestWhen to seek care
Acute: hours to a few daysA short-term illness, food poisoning, motion sickness, migraine, medication effect, or another recent trigger may be involved.Seek care sooner if symptoms are severe, vomiting is repeated, fluids cannot be kept down, or warning signs occur.
Subacute: several days to weeksOngoing infection, medication effects, pregnancy, reflux, anxiety, or another condition may need consideration.Arrange medical advice if nausea is not improving, interferes with eating or activity, or is accompanied by weight loss or dehydration.
Chronic or recurrent: weeks or repeated episodesRecurring digestive, neurologic, hormonal, medication-related, or other medical causes may be possible.Arrange an assessment to find the cause, especially if episodes are worsening or occur with pain, vomiting, weight loss, or other concerning symptoms.

Duration alone cannot identify the cause of nausea. Worsening symptoms, repeated vomiting, dehydration, weight loss, or concerning associated symptoms should take priority over the time pattern when deciding how quickly to seek care.

Relief Tips

What May Help Relieve Nausea

  • Take small, frequent sips of clear fluids rather than drinking a large amount at once.
  • Eat small portions of bland foods when tolerated, such as crackers, toast, rice, or bananas.
  • Avoid greasy or spicy foods and strong odors that make your nausea worse.
  • Get fresh air or move to a well-ventilated area if smells or stuffiness trigger symptoms.
  • Rest and avoid strenuous activity while you feel unwell.
  • Change position slowly, especially when getting out of bed or standing up.
  • Avoid alcohol until the nausea has settled.

When to See a Doctor

When to See a Doctor About Nausea

  • Arrange medical advice if nausea lasts more than a few days.
  • Seek an assessment if nausea keeps returning or is becoming more frequent.
  • Contact a clinician if nausea interferes with eating, drinking, work, sleep, or daily activities.
  • Arrange care if nausea causes weight loss or follows the start of a new medicine.
  • Discuss nausea with a clinician during pregnancy, particularly if eating or drinking is difficult.
  • Seek advice promptly when nausea affects a child, older adult, or person with a chronic condition.

For an appointment, record when the nausea began, how long it lasts, what triggers it, and whether you have vomiting, bowel changes, pain, or fever. Also note your medicines, possible pregnancy, recent travel, and whether you can drink and urinate normally.

Complications

Possible Complications of Prolonged Nausea

  • Reduced fluid intake or vomiting can cause dehydration.
  • Severe or prolonged nausea and vomiting can lead to an electrolyte imbalance.
  • Poor intake may cause inadequate nutrition or unintended weight loss.
  • Dehydration and limited nutrition may contribute to weakness, dizziness, or fainting.
  • Persistent nausea can disrupt sleep and make normal daily activities harder.

Diseases & Conditions

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