A 36-year-old man has had asthma since he was 10 years old. He presents with a 2-day history of low-grade fever, malaise, and cough productive of brownish mucous cords. This is his fourth such episode in the last 2 years. CXR shows bronchiectasis. A complete blood count (CBC) is significant for eosinophilia 1. What is the most likely cause of his symptoms?
2. What is bronchiectasis and how to prevent its complications? 3.How can you confirm diagnosis? 4. How can you treat this patient?