The symptom of thirst is familiar to everyone. Thirst is thought to be part of a corrective mechanism which acts as a support to the physiological control of fluid balance in the body. Thirst can also be a prominent symptom in diseases which disrupt fluid balance in the body. It is worth considering the physiology of thirst to understand how different diseases may produce thirst as a symptom and disrupt fluid balance.
This is a companion discussion topic for the original article at https://patient.info/doctor/thirst