Most of the reasons for getting up in the morning and brushing your teeth with phlegm and nausea are still due to the condition of pharyngitis, which may be acute pharyngitis or chronic pharyngitis. If there is redness, swelling and pus in the throat, it is acute pharyngitis that causes phlegm and nausea. If there is lymphoid follicular hyperplasia in the throat, the diagnosis of phlegm and nausea caused by chronic pharyngitis can be confirmed at this time. In this case, in addition to the symptoms of phlegm and nausea, there is also a feeling of discomfort in the throat, foreign body sensation, and in some cases, pain, burning, and dryness. At this time, for acute pharyngitis, you need to take throat-clearing drugs, such as oral solution to clear heat and detoxify the throat, for treatment. In the case of chronic pharyngitis, this time you can drink water boiled with fat sea, or use pharyngitis tablets for treatment.