Thanks for your question on Health Care Magic.
I can understand your wife's situation and problem.
In my opinion, you should
consult pulmonologist and get done
1. Clinical examination of respiratory system
2. PFT (Pulmonary Function Test).
Recurrent
cold and respiratory problems can be due to
asthma. So PFT is must for the diagnosis of asthma. It will also tell you about severity of the disease.
Treatment is also based on severity only. She may need inhaled bronchodilators and inhaled corticosteroid (ICS), like foracort along with combination of antihistamine and anti allergic drugs.
Inhaled treatment is first line treatment for asthma. It is having excellent effectiveness and minimal side effects. And hence they are very safe for long term use.
Once she is stabilize with the treatment, we can plan tapering off the treatment. So these drugs are not for life time. Over the period of time, they can be tapered down.
So consult pulmonologist and discuss all these.
Hope I have solved your query.
Wishing good health to your wife. Thanks.