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 |
|