Hi Doctor, My Mother Is Having COUGH Problem From Last

Hi Doctor,
My mother is having COUGH problem from last 6 months and after her all tests and consultation the report says that her eosinophil count has increased and that too one of the doctor has said that her wind pipe has shrink. She is an asthma patient too and from last few weeks she gets major asthma attacks. She is taking steam and nevulizer twice a day but no improvement is there in her health . Please suggest.