White phlegm without coughing is usually not from the lower respiratory tract, but from the upper respiratory tract, such as allergy in the throat, pharyngitis or reflux esophagitis.
1. Allergy in the throat area: allergy in the throat area caused by a variety of reasons, leading to an increase in the secretion of mucous membrane glands in the throat area, thus causing the phenomenon of white phlegm without coughing.
2. Pharyngolaryngitis: the increase of secretion of the glands in the throat area due to inflammation stimulation, thus causing the phenomenon of not coughing and white phlegm.
3. Reflux esophagitis: patients with reflux esophagitis can also have the symptom of not coughing up white phlegm, which can be caused by long-term reflux of gastric acid in the throat, stimulating the glands to increase secretion.
There are many other reasons for the phenomenon of not coughing but having a lot of white sputum, it is recommended that such patients go to a regular hospital, cooperate with the doctor to complete the relevant examinations, identify the causes and actively deal with them.