### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
helo sir,i m 45 yr female,65 kg wt.from last 20 yr i m sufering from dry cough.now it is in chronic stage.so many medication i taken bt no relive.nw i m 2 much distress.,my treatment history in short is; i tken so many antibiotic like azithromycin,cefodoxime n k clavunulate,anti allergic,i m hypothyroid,hypertensive n osteoarthritis n depresion.4 all regularly taking medicine.no diabetic,no TB,no surgical history.since last 5 yr taking ayervedic medicine 4 cough bt nw this time it is nt suitng.regularly i take steam inhalation.                              i m allergic 2 dust,fumes.99% i take prevention from it.i belong 2 upper middle family.                                    sir u r humbleful request 2 treat my this dry cough as soon as posible bz now it is not toleratable 4 me.                                                                  thanking u

### output:

Thanks for your question on Chat Doctor. I can understand your concern. You are having chronic cough for 20 years. Possibility of bronchitis or asthma is more in your case. So better to consult pulmonologist and get done 1. Clinical examination of respiratory system 2. Chest x-ray 3. PUT (Pulmonary Function Test). Chest x-ray is needed to rule other lung related causes. PFT is must for the diagnosis of asthma or bronchitis. It will mostly also tell you about severity of the disease and treatment is based on severity only. You will mostly improve with inhaled bronchodilators and inhaled corticosteroid (ICS). Combination of antihistamine and anti-allergic Chat Doctor.  Don't worry, your cough will subside. First diagnose yourself and then start appropriate treatment. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.