Generalized weakness and also vomit this situation, with the following factors: 1, acute gastroenteritis: is an acute inflammation of the gastric mucous membrane tissue, in most cases, due to dietary factors, such as overeating, or accidentally consume unclean, has been spoiled food, will cause acute gastroenteritis, acute gastroenteritis will cause nausea, vomiting, diarrhea, fever, weakness and other symptoms, for acute gastroenteritis in the, the treatment can choose belladonna injection to relieve the symptoms of vomiting. Treatment can choose belladonna injection, used to relieve the symptoms of vomiting, dietary attention to hygiene, avoid eating food that hurts the stomach. 2, gastritis: is a kind of inflammation of the gastric mucous membrane tissue, can cause acid reflux, belching, nausea, vomiting, bloating, fatigue and other symptoms, it is a kind of common digestive tract disease, for gastritis, you can take Ranitidine, metformin, omeprazole, atropine, and other drugs to relieve the symptoms.