Yes, there are documented cases where heredity also is one of the factors causing asthma. Contrary to popular belief, asthma has nothing to do with common cold. Traditional medicine has always been used to treat asthma- fish medicine is one such medicine. Its effect is still being studied. This is one of the predisposing causes for asthma.
Inhalers are very important in the treatment of asthma.
They are not addictive. Eosinophilia - Increase in eosinophils. Mucolytic - Drug that helps in expelling sputum. Expectorant - Drug that suppresses cough.