| Autoimmune adrenalitis |
| Isolated adrenal insufficiency |
| Polyglandular autoimmune syndrome type I |
| Polyglandular autoimmune syndrome type II |
| Infectious adrenalitis |
| Tuberculosis |
| Disseminated fungal infection |
| Histoplasmosis |
| Paracoccidioidomycosis |
| HIV infection and AIDS |
| Syphilis |
| African trypanosomiasis |
| Metastatic cancer |
| Primarily lung, breast, stomach and colon cancer or lymphoma |
| Adrenal hemorrhage or infarction |
| Drugs |
| Ketoconazole |
| Fluconazole |
| Rifampin |
| Phenytoin |
| Barbiturates |
| Megestrol acetate |
| Other: aminoglutethimide, etomidate, metyrapone, suramin, mitotane |
| Other |
| Adrenoleukodystrophy and adrenomyeloneuropathy |
| Congenital adrenal hypoplasia |
| Familial glucocorticoid deficiency |
| Familial glucocorticoid resistance |
| Defective cholesterol metabolism |
