What it is
Nausea and vomiting describe the subjective sensation of the urge to vomit and the reflex expulsion of gastric contents — among the most common presenting symptoms in clinical medicine.
Research-supported
Nausea and Vomiting
The sensation of impending vomiting and the forceful expulsion of stomach contents — occurring across a wide spectrum of causes from pregnancy to serious systemic disease.
CategoryDigestive
Reviewed by Ciara Magee · Functional Health
26 March 2026
At a glance
Nausea and Vomiting at a glance
Commonly experienced as
- Many report a loss of appetite and difficulty keeping food down.
Evidence context
Research-supportedSee the evidence snapshotSafety
See staying safeContext
Patterns of Nausea and Vomiting
Nausea is the subjective sensation of the urge to vomit, typically accompanied by autonomic features (pallor, sweating, salivation, tachycardia). Vomiting is the reflex contraction of the abdominal muscles and diaphragm forcefully expelling gastric contents. Together they are among the most commonly experienced and presenting symptoms across all clinical settings. Causes span the gastrointestinal (gastroenteritis, gastro-oesophageal reflux, peptic ulcer, gastroparesis, IBD), neurological (migraine, vestibular — motion sickness, labyrinthitis, Ménière's disease; raised intracranial pressure), endocrine/metabolic (pregnancy, diabetic ketoacidosis, hypercalcaemia, Addison's disease), drug/toxin-related (chemotherapy, NSAIDs, opioids, alcohol, digoxin), and psychiatric (eating disorders, anxiety, functional nausea). The temporal pattern — acute, cyclic, or chronic — combined with associated symptoms guides differential diagnosis.
Could this be you
People commonly experience
Nausea and Vomiting shows up differently for everyone. Browse by how it tends to be felt — these are common experiences, not a checklist or a diagnosis.
In the body1 common experience
- Many report a loss of appetite and difficulty keeping food down.
Common experiences people describe — not a diagnostic checklist.
The Evidence
Evidence context
What research and clinical practice tell us about nausea and vomiting — causes, management options, and when to seek urgent care.
Overall pictureHigh evidence base
Well-studied symptom with clear management pathways
Nausea and vomiting are among the most researched symptoms in medicine, with strong evidence supporting both conventional antiemetics and select complementary approaches such as ginger and acupressure. Identifying the underlying cause is essential to appropriate management.
When to seek urgent careSome presentations of vomiting require immediate medical attention.
Seek emergency care for blood in vomit, vomiting alongside severe headache with neck stiffness or light sensitivity, severe abdominal pain with rigidity, or vomiting with confusion. These may indicate serious conditions including GI bleeding, meningitis, bowel obstruction, or a metabolic emergency. Do not delay assessment.
What the evidence supportsSeveral interventions have strong clinical backing for nausea relief.
Antiemetics such as ondansetron, metoclopramide, and prochlorperazine are well-evidenced for acute nausea. Structured antiemetic regimens are standard for chemotherapy-related nausea. Ginger (around 1 g daily) has consistent evidence for pregnancy-related nausea and chemotherapy nausea. Acupressure at the P6 wrist point has moderate evidence across multiple nausea types.
Safety considerationsSome commonly used antiemetics carry important cautions.
Metoclopramide should not be used long-term due to risk of tardive dyskinesia, and is not appropriate where bowel obstruction is suspected. Ondansetron may prolong the QT interval — relevant for those with heart conditions or taking other QT-affecting medications. Always discuss medication choices with a qualified health professional.
Traditional and complementary approachesGinger and acupressure have cross-cultural use and clinical support.
Ginger is used across Ayurveda, Traditional Chinese Medicine, and European herbal traditions for nausea — and is one of the few traditional remedies with consistent clinical evidence. Acupressure at the P6 (Nei Guan) point is widely used and has research support. Peppermint and fennel are common traditional remedies, though evidence is more limited.
Understanding the causesNausea and vomiting arise from a wide range of underlying conditions.
Causes include gastrointestinal infections, pregnancy, migraine, vestibular disorders, medication side effects, and metabolic conditions such as diabetic ketoacidosis. The pattern — whether acute, cyclic, or chronic — and associated symptoms help guide assessment. Identifying the cause shapes which management approach is most appropriate.
When to involve a professionalPersistent or unexplained nausea warrants professional assessment.
Nausea lasting more than a few days, recurring without clear cause, or accompanied by weight loss, difficulty swallowing, or other concerning features should be assessed by a qualified health professional. Self-management is appropriate for mild, short-lived cases — but professional assessment is important when the cause is unclear or symptoms are severe.
Safety first
Staying safe
General, informational guidance — not diagnostic. A qualified practitioner can advise on your own situation.
- Metoclopramide is contraindicated in gastrointestinal obstruction and should not be used long-term due to tardive dyskinesia risk
- Ondansetron can cause QT prolongation — caution in those with cardiac conditions or on other QT-prolonging drugs
References
Evidence & Research
Educational sources that inform this overview. Inclusion is for context and does not imply endorsement.
- Central neurocircuitry associated with emesis
- Stimulation of the wrist acupuncture point P6 for preventing postoperative nausea and vomiting
- AGA technical review on nausea and vomiting
Full citations are maintained by the Gyfts editorial team and reviewed periodically.
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