Hi, Initially I would like to describe you about different causes of cough. 1. Dry, chronic cough - acid irritating of the lungs in oesophagus reflux 2. Dry cough also seen in patients using ace inhibitors 3. Cough in lung disease -tb, asthma 4. Pertussis, foreign body 5. Croup 6. Reccurent laryngeal nerve palsy 7. Tumor in the neck causing pressure over trachea 8. Sore throat, any patient complaining of cough Smokers have morning cough with little sputum, productive cough is the cardinal feature of chronic bronchitis in asthma nocturnal cough is seen, and may occur after mild exertion or following forced expiration. A worsening cough is the most common presenting symptom of lung cancer, cough with stridor seen in whooping cough, laryngeal or tracheal obstruction. I would like to examine ent, lft and histamine bronchial provocation testing, ambulatory oesophagus ph monitoring and manometer, fibre optic bronchoscopy for fb or tumour, ecg, echo to rule cardiac causes of cough, hyperventilation testing, and normal chest X ray. I suggest the treatment for sore throat in this case if Gerd cause is ruled out, on examination of throat if I see the congested and enlarged tonsils. The treatment I usually prefer is tab Azithromycin, tab Chymoral forte, tab Montairlc, syrup Ascoryl dx, and warm water gargling twice a day. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Pavani