Sleep one night, wake up in the morning will halitosis, mouth yellow what happened

The patient gets up in the morning and has bad breath and yellow tongue coating, which is considered to be caused by damp-heat in the spleen and stomach. It is mostly caused by patients who often eat greasy, spicy, irritating and cold foods, irregular diet and gastrointestinal dysfunction, and when the patient lacks water in the body, it will lead to bad breath and yellow tongue coating.