Question

What is the first sign of dehydration?

Answer 1

Dry mouth and tongue

Answer 2

Two early signs of dehydration are thirst and dark-coloured urine. This is the body's way of trying to increase water intake and decrease water loss.
Other symptoms may include:
dizziness or light-headedness
headache
tiredness
dry mouth, lips and eyes
passing small amounts of urine infrequently (less than three or four times a day)

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