What's wrong with eating and nausea?

Nausea is called nausea in medicine, often accompanied by vomiting symptoms, the most common incentives are caused by digestive system diseases, such as acute and chronic gastritis, peptic ulcer, bile reflux stimulation throat induced by long-term treatment of pharyngitis, acute appendicitis, acute cholecystitis may be caused, need to go to digestive internal medicine, can do gastroscope, abdominal flat film, abdominal B ultrasound to see. In addition, there are local drug stimulation, may also cause, such as sulfanilamide, salicylates, aminophylline, quinine, etc., generally after stopping, symptoms alleviate themselves. There are mental psychological causes, such as anorexia nervosa, hysteria, etc. If women, to see if pregnancy caused by early pregnancy reaction.