There are many reasons why you always cough without a cold, such as sinusitis, chronic rhinitis, allergic asthma, bronchial asthma and bronchitis.
1. Sinusitis, chronic rhinitis: the inflammation of sinusitis and chronic rhinitis can spread to the pharynx or the inflammatory secretion flows to the pharynx, which stimulates the pharyngeal reflex to cough.
2. Variant asthma, bronchial asthma: due to the inhalation of allergic substances into the bronchial tubes, stimulation and increase in secretions, secretions stimulate the bronchial tubes and cough.
3. Chronic bronchitis inflammation caused by various reasons: bronchial inflammation leads to increased phlegm in the bronchial tubes to stimulate the airways can also cause coughing.
No cold always cough may have other reasons, such as pneumonia, tuberculosis, lung tumors, esophageal reflux disease, heart failure, etc., so you should go to the hospital in a timely manner, by the doctor according to the symptoms, signs and symptoms and auxiliary examination to determine the specific cause.