Hello. my mother aged 58 years is diagnosed with subacute hypersensitive pneumonitis(hp) a month ago and is on corticosteroid 60mg/day alongwith calcium tablets. The concerned doctors have advised to leave the hometown and shift to some new place but is not so easy for us. Further she has become quite weak inside and unable to move just 20 steps. I wish to know how the allergen can be identified and if some better treatment is available in medical science.would the use of air purifiers and vacuum cleaners be beneficial for her. Please help