Nausea that is noticeable when you get up in the morning to brush your teeth is mostly caused by chronic pharyngitis. According to Chinese medicine, chronic pharyngitis is usually caused by weakness of the spleen and stomach, poor transportation and digestion, rebellious gas and acid reflux, which cause irritation to the mucous membrane of the throat. The main reason for the nausea is the upward flow of gas and throat, so pay attention to the spleen and stomach, usually pay attention to a light diet, avoid spicy and greasy food stimulation, you can take the spleen and dampness, the flow of gas and throat of Chinese medicine, such as ginseng and white atractylodes pill. At the same time, we should pay attention to rest, avoid excessive late night, strain, excessive speech, avoid contact with polluted air, environment, dust.