Nausea is the distressing, subjective sensation of needing to vomit. It is not a disease itself but a powerful protective mechanism designed to warn the body against toxic ingestion or internal dysfunction. Common Triggers and Causes
: Motion sickness from travel, unpleasant odors, and extreme heat or humidity can trigger the brain's vomiting center. Nausea
: Pregnancy (especially in the first trimester), severe migraines, and chronic diseases like kidney or liver disorders are frequent causes. Additionally, chemotherapy and certain medications (like antibiotics or opioids) often list nausea as a primary side effect. Nausea is the distressing, subjective sensation of needing
: Conditions like food poisoning, stomach ulcers, GERD, and gastroparesis (delayed stomach emptying) often disrupt normal digestive movement. : Pregnancy (especially in the first trimester), severe
Nausea can arise from a wide range of physical and psychological stimuli: