| Causes | Associated conditions |
| Allergic | Allergic bronchopulmonary aspergillosis (ABPA) |
| Infectious | Tuberculosis, atypical mycobacteria |
| Fungal: histoplasmosis, blastomycosis, coccidioidomycosis, mucormycosis, aspergillosis (nonallergic) | |
| Pulmonary echinococcosis | |
| Influenza A | |
| Other | Rheumatoid arthritis |
| Granulomatosis with polyangiitis (Wegener's) | |
| Bronchogenic carcinoma | |
| Chronic granulomatous disease | |
| Other: glomerulonephritis, red cell aplasia, diabetes insipidus, and scleritis |
