why does hyperthyroidism patients often present with thirst?

Question

has the thirst got anything to do with the losing sweat? i was thinking that maybe the decrease in body volume in sweating stimulates the production of aldosterone and hence produces thirst...but i'm not sure though!

Answer 1

In hyperthyroidism,the body's metabolism is very much more quicker than normal person,so much heat is produced and there's a lot of sweating.
Sweating leads to decease in body water (water loss is more than loss of salts) and increase in tonicity of blood,which all leads to secretion of angiotensin 2 which stimulate the thirst center in the brain to cause thirst sensation.
Aldosterone don't cause thirst.Angiotensin 2 also stimulate secretion of aldosterone too.Aldosterone is responsible for reserving body fluids and salts by decresing urine volume.

Answer 2

I am hypo and always thirsty, I think it has to do with your slow metabolisation including water. It effects you whole system.