Difference between Diabetes mellitus and Diabetes insipidus

Point of distinction	Diabetes mellitus	Diabetes insipidus
Characteristics	Hyperglycemia (increased blood sugar level), glycosuria(glucose in urine), polyuria (excessive urine), polydipsia(excessive thirst), polyphagia(excessive appetite)	Excretion of large quantity of dilute glucose free urine, polydipsia (excessive thirst) and dehydration
Disease caused due to	It is due to deficiency of insulin	It is due to failure of secretion of Antidiuretic hormone or vasopressin
Glycourea (excretion of sugar in urine)	Sugar is excreted in urine	Sugar is not excreted in urine
Blood sugar level	Rise or Increased blood glucose level (hyperglycemia)	Normal blood glucose level
Increased volume of urine is due to	Volume of urine increased due to osmotic effect of glucose	Volume of urine increased due to decreased absorption of water in renal tubules
Disorder	It is pancreatic disorder	It is hypothalamic disorder
Concentration of urine	Normal concentration	Very dilute urine
Blood cholesterol level	Rises	Normal
Polyphagia and Hunger	Excessive	Normal
Ketone bodies in blood and urine	Present	Absent
Volume of urine	Excessive	Enormous