Hyperinsulinism is a rare condition that comes in two forms, diffuse hyperinsulinism and focal hyperinsulinism. Hyperinsulinism means that a person’s body makes too much insulin. This is caused by a problem with the pancreas (an organ in the abdomen that aids digestion), and in diffuse hyperinsulism the entire pancreas is effected rather than just a small portion (focal hyperinsulinism). Insulin is a messenger that tells the body to break down sugars to make energy needed for daily life. Signs of hyperinsulinism usually appear in early infancy to late childhood. Symptoms include frequent episodes of low blood sugar, a lack of energy, irritability, and difficulty feeding. Talk with your doctor to find the best treatment for you if you have been diagnosed with diffuse hyperinsulinism.