What are the endogenous causes of hyperinsulinism?

Insulinoma Functional beta cell disorder (nesidioblastosis- hypertrophy of beta cells in pancreas due to obesity) noninsulinoma pancreatogenous hypoglycemia (physiologic insulinoma) Post-gastric bypass hypoglycemia (due to high amount of insulin according to high weight and increased incretin (GLP-1) levels Insulin auto-immune hypoglycemia (causing accumulation and complexation of insulin increasing half-life) antibody to insulin/ insulin receptor. Insulin secretogogue (sulfarurease, amaril... stimulating beta cells)