Permanent neonatal diabetes mellitus (PNDM) is a monogenic form of neonatal diabetes (NDM) characterized by persistent hyperglycemia within the first 12 months of life in general, requiring continuous insulin treatment. The disease is MONDO_0100164 (permanent neonatal diabetes mellitus). Also known as: PDMI, PNDM, monogenic diabetes of infancy, permanent diabetes mellitus of infancy.