Question category: Respiratory
A 28 year old female with asthma which is normally well controlled presents with worsening wheeze. She states this is associated with a productive cough and on occasion the sputum has been blood stained. This is also associated with malaise and severe headache. This has occurred on several occasions over the last few months. Her family owns a farm. As her father died recently she has been helping out on the farm. Bloods reveal an eosinophilia and raised IgE. A CXR shows evidence of pulmonary infiltrates. Given the most likely diagnosis, what treatment should be commenced?