<s>[INST] Dear Doctor. I hope you could kindly help me. I am 56 years old female and have asthma , sinus and allergy . At a young age I had asthma but when I was 12 years till 45 years I was asthma free but at the age of 25 start to have sinus attack but not acute till late 40s and about 2 years back, start sneezing non stop with watery eyes. The GP told me I have allergy and was given zyrtec. Now almost 2 months I stop taking zyrtec because I don t sneeze that often and moreover zyrtec make me very lethargic.A few weeks ago I had asthma attack but after taking cough mixture and accuhaler it got better but reasonly I start feeling itchness inside my lower throat and upper chest. What causes these? [/INST] Hello, Thanks for posting, Well from your description of itchy throat it is very likely that you have developed viral pharyngitis (given your past history of URTI) or you have post infection irritation of your throat. A laryngoscopy could be done to determine if any inflammation. If bacteria throat infection is also possible. Clinical evaluation will be necessary before you can take any treatment. Maybe you could allow some few days before you go see a doctor to see if the itchiness can clear off on its on. Possibility of another allergy developing inside your throat is possible, hence you will require another antihistaminic (if you have developed side effects as a result of zyrtec it is better you ask your doctor for another prescription). Hope this was helpful </s>