<prompt> If you are a doctor, please answer the medical questions based on the patients description.hi, i have had asthma since i was very young but over time i have pretty much grown out of it. To the stage where i can go months without using any inhaler. I basically never use it anymore. I do heaps of exercise and never even take it with me cos i no i dont need it. About 5 months ago i came to Australia for the summer. When i got here i started getting very tight chested and wheezy. It would b bad for few days then ok. Also i get fairly tight chested when doing exercise which isnt usually the case. I have also been using my Inhaler quite a lot, and sometimes it doesnt really help a great deal my breathing is still quite shallow and wheezy. Just wondering if you knew what might be the problem. It seems very strange that ive only got this coming to Australia. I have been here before and never been like this. But the weather has been very changey this time hot then cold all the time.And i heard of an Asthma type virus or something that lots of people had. Im just concerned i havent shaken this off. Thankyou for your help  <response>: Hello, Thank you for asking at Chat Doctor. I went through your history and would like to make following suggestions to you:1. From your history, it seems you have had a good control of asthma symptoms with minimum medications and the control has been lost after coming to Australia. Of course, the change in environment has to do with it. If you do not have significant fever, please do not worry about viruses.2. Were I treating you, I would suggest you daily montelukast and preventer type of inhaler such as inhaled corticosteroids or inhaled corticosteroidsformoterolalbuterol combination. Once your symptoms would improve after at least 2-3 months of regular use of above medications, I would think of reducing your maintenance Chat Doctor. 3. Should you have any symptoms of rhinitis - nasal congestion, running nose, sneezing, etc., I would also add an antihistamine like cetirizinelevocetirizine to above 