firstly you should be investigated and diagnosis should be made.
there may be simple cause and with routine medicine you may be cured.
Routine blood checking,x ray
chest mostly will give you clue about your problem.some time eosinophilia
may produce this type of picture,then a course of simple medicine like di ethyl carbemazine can your problem.
yes if there is some obstruction in respiratory tract
,then it may be costly affairs.