Weakness: When you are dehydrated you are more likely to feel weak. If you are feeling weak all the time and your mouth is getting dry then it is sign that you need more water in your system.
Lack of Urination: The more we drink water and take in other forms of liquids, the more we will urinate. On the other hand, if you observe that you haven’t urinated for the past 12 hours then it means you did not take enough liquid into your system and because of that you will experience a constant dryness in your mouth.
Swollen Tongue: Another sign for dehydration is getting swollen tongue. Your tongue is made up of a sensitive tissue and nerves that can constantly feel and taste. When you are dehydrated your saliva decreases your tongue gets swollen as it runs out of moist.
Thirst: When your body is releasing more water than it takes you are more likely to feel thirsty. If you realize that you are thirsty all the time then it is a sign that you are dehydrated.
Feeling Dizziness: This condition is also another sign that you are low on water.
Lack of Sweat: If you are doing some physical exercise and your body is not heating up and sweating, then you are more likely to be dehydrated.
Dry Mouth: Less water in your system also means less saliva in your mouth and because of that your tongue will run out of moist.
Fainting: This condition is also another sign of dehydration.
Change in Urine Colour: When there is less water in your body then the colour of your urine is more likely to change.
Shivering: If you tremble and feel your heart is beating fast and jumping out of your chest then it might be a sign that you are low on liquids in your system.