Total lack of insulin production, with symptoms of polydipsia, polyphagia, polyuria, blurred vision, fatigue, and frequent infections, is

The answer is type 1 and type 2 diabetes this is a disease that lack of insulin production

type 1 diabetes resulting in glycosuria, polydipsia, polyphagia, polyuria, blurred vision, fatigue, and frequent infections. Diabetes insipidus is an undersecretion of ADH from the neurohypophysis resulting in polydipsia and polyuria.