Open all pages about Excessive thirst
Causes of thirst include sweating after exercise, sickness and diarrhoea, not drinking enough fluids, drinking too much alcohol, and being pregnant.
It's not normal to constantly feel thirsty even when you're drinking a lot. See a GP to find out what's causing your excessive thirst.
Page last reviewed: 09/11/2023
Next review due: 09/11/2026