Pharyngitis can cough up yellow sputum and often occurs when a bacterial infection causes the disease.
Pharyngitis is an inflammatory disease of the mucous membrane of the throat, submucosa and its lymphoid tissues. Common causes are viral and bacterial infections, allergic reactions, spread of inflammation in the surrounding tissues and organs, and some systemic diseases. The main symptoms include cough, sputum, dryness, foreign body sensation and hoarseness. It can be an attack under the action of acute adverse physical and chemical stimuli, or it can be a chronic disease that is prolonged.
When there is a bacterial infection, yellow purulent sputum can be formed from the mucosal epithelium and leukocyte exudate, bacterial residues and metabolites mixed.
If yellow sputum is coughed up in pharyngolaryngitis, it is necessary to actively consult a doctor for a systematic examination to clarify the diagnosis and cause of the disease.