Nausea and vomiting

Nausea and vomiting is a complex, coordinated clinical syndrome involving the gastrointestinal, autonomic, and central nervous systems, frequently encountered across pediatric and adult populations Nausea is the subjective, distressing sensation of an urge to vomit, whereas vomiting (emesis) is the forceful, involuntary expulsion of gastrointestinal contents through the mouth driven by coordinated contractions of the abdominal wall and diaphragm

Nausea and vomiting is a complex, coordinated clinical syndrome involving the gastrointestinal, autonomic, and central nervous systems, frequently encountered across pediatric and adult populations The process is mediated centrally by the brainstem emetic circuitry and chemoreceptor trigger zone, which integrate afferent neurochemical signals—primarily via serotonin, dopamine, histamine, and neurokinin pathways—triggered by systemic toxins, medications, vestibular dysfunction, mechanical distens...

Nausea and vomiting is a complex, coordinated clinical syndrome involving the gastrointestinal, autonomic, and central nervous systems, frequently encountered across pediatric and adult populations Nausea is the subjective, distressing sensation of an urge to vomit, whereas vomiting (emesis) is the forceful, involuntary expulsion of gastrointestinal contents through the mouth driven by coordinated contractions of the abdominal wall and diaphragm The process is mediated centrally by the brainstem...

The process is mediated centrally by the brainstem emetic circuitry and chemoreceptor trigger zone, which integrate afferent neurochemical signals—primarily via serotonin, dopamine, histamine, and neurokinin pathways—triggered by systemic toxins, medications, vestibular dysfunction, mechanical distension, or gastrointestinal tract inflammation

The process is mediated centrally by the brainstem emetic circuitry and chemoreceptor trigger zone, which integrate afferent neurochemical signals—primarily via serotonin, dopamine, histamine, and neurokinin pathways—triggered by systemic toxins, medications, vestibular dysfunction, mechanical distension, or gastrointestinal tract inflammation