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Nausea in children
Medical expert of the article
Last reviewed: 04.07.2025
Nausea is an unpleasant sensation in the epigastric region, often accompanied by weakness, dizziness, a semi-fainting state, pale skin, and salivation. It usually precedes vomiting, but is often an independent symptom. Nausea occurs both in diseases of the gastrointestinal tract and other organs and is often conditioned by a reflex. In this case, an increase in pressure in the duodenum with a simultaneous decrease in the pressure gradient between it and the stomach is established.
The following pathogenetic variants of nausea are distinguished:
- Central nausea (psychogenia, structural lesions of the central nervous system) occurs directly when the vomiting center is irritated.
- Reflex nausea (diseases of the digestive organs, urinary system, etc.) is observed with vagotonia.
- Hematogenous-toxic nausea is caused by the effect of metabolites, toxins, drugs and poisons on the chemoreceptors of the medulla oblongata.
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