No cold old cough may be bronchitis, may also be chronic pharyngitis and pneumonia and other disease factors.
1. Bronchitis: is due to biological or physical and chemical stimuli and other pathogenic factors caused by inflammation of the mucous membrane of the trachea, to cough, cough sputum as the main clinical manifestations.
2. Chronic pharyngitis: no cold old cough may also be due to the presence of chronic inflammation of the pharynx, due to long-term inflammation of the throat mucosa stimulation, resulting in the symptoms of old cough.
3. Pneumonia: no cold is always coughing, may also be due to bacterial or viral inflammatory changes in the lungs, resulting in increased secretion, thus causing the cilia of the trachea and bronchial mucosa to strengthen the movement, the symptoms of coughing can occur.
If the phenomenon of coughing without a cold occurs, it is recommended that patients seek medical examination to clarify the cause of the disease and receive treatment as soon as possible to avoid delaying the condition.