"How to EXPLAIN hypoglycemia":
EXogenous drugs (insulin, oral hypoglycemics, alcohol, pentamidine, quinine, quinolones)
Pituitary insufficency (no GH or cortisol)
Liver failure (no glycogen stores)
Adrenal failure (no cortisol)
Insulinomas/ Immune hypoglycemia
Non-pancreatic neoplasms (retroperitoneal sarcoma)