I'm the grass not the tree

Nausea is a feeling of sickness in the stomach, usually accompanied by the urge to vomit. Vomiting is the forceful ejection of the stomach contents through the mouth.

Nausea and vomiting occur when the vomiting center in the brain is activated by any number of causes. These can include overeating, eating foods that are spoiled, drinking too much alcohol, food allergies, medication, or illness. Drugs used in the treatment of cancer and for pain relief frequently cause nausea and vomiting. Some people become nauseated and vomit from the motion of a vehicle, boat, or airplane. Nausea and vomiting are common in the early stages of pregnancy, especially in the morning. Migraine headaches are also frequent causes of nausea and vomiting. Other physical causes include gallstones, intestinal obstructions, gastroenteritis, and irritation or inflammation of the stomach. There are psychological causes of nausea and vomiting also. These range from stress and fear, to more serious causes like bulimia (intentional vomiting to control weight). Because the treatment and severity of the problem depends upon the cause, you should always check with your doctor if you have persistent, unexplained, or recurring nausea and vomiting. Nausea and vomiting in infants and young children should always be treated by a doctor. Projectile vomiting in infants can be a sign of pyloric stenosis, a blockage at the stomach outlet that must be treated immediately.

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