what is nausea

Nausea is a sensation of unease and discomfort in the stomach, often perceived as an urge to vomit. It is not an illness itself but a symptom that can arise from many causes including digestive disorders, motion sickness, pregnancy (morning sickness), medication side effects, anxiety, and infections. The feeling can range from mild stomach discomfort to severe and persistent, sometimes leading to vomiting but not always. Nausea can also be associated with other symptoms like dizziness or loss of appetite. Treatments typically involve addressing the underlying cause and may include anti-nausea medications known as antiemetics.