Hyperinsulinism

Also known as: CHI, congenital hyperinsulinism.

What is congenital hyperinsulinism?

Congenital hyperinsulinism is a rare genetic condition in which the cells of the body that are responsible for producing insulin, known as beta cells, produce too much resulting in low blood sugar and a variety of complications. This conditions are called congenital hyperinsulinism.

What causes congenital hyperinsulinism?

Different types of genetic mutations can lead to hyperinsulinism, or excess of insulin production. It can also be present along with other genetic disorders.

What are the symptoms of congenital hyperinsulinism?

Babies with hyperinsulinism are often sleepy, lethargic or irritable. They may also have a rapid heart rate and exhibit more hunger than usual. However, symptoms can be subtle.

What are hyperinsulinism care options?

Low blood sugar is dangerous and requires prompt medical intervention. Medications to prevent the release of insulin are effective in many babies with hyperinsulinism. Surgery to remove all or part of the pancreas, known as a pancreatectomy, is another treatment option.

Reviewed by: Adriana Alejandra Carrillo Iregui, MD

This page was last updated on: September 16, 2025 12:32 PM