Why is there polyuria and excessive thirst in Conns syndrome?
Conn’s causes increased serum sodium levels. Two ways the body tries to get the sodium levels back into normal range are to increase fluid volume (which dilutes the sodium) and secrete excess sodium through the kidneys. In the body, wherever sodium goes fluid follows, so excreting sodium causes fluid to follow (polyuria). Feeling thirsty is the body’s way of getting the extra water it needs to dilute the sodium (polydipsia).
