It's normal to sometimes feel thirsty, but 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.

Why am I always thirsty?

Most of the time if you're feeling thirsty it's because you need to drink more fluids.

This can happen if you:

• sweat a lot after doing exercise
• are unwell with sickness and diarrhoea
• don't drink enough fluids
• drink too much alcohol or caffeine
• eat salty or spicy food
• have a high temperature of 38C or above
• are pregnant

Check if you're dehydrated

Symptoms of dehydration in adults and children include:

• feeling thirsty
• dark yellow and strong-smelling pee
• peeing little and less than 4 times a day
• feeling dizzy or lightheaded
• feeling tired
• dry mouth, lips and eyes

Find out more about dehydration

Is it dry mouth or excessive thirst?

You may think you're thirsty when you actually have a dry mouth.

If it's a dry mouth, you may have:

• a burning sensation or soreness in your mouth
• changes in your sense of taste
• difficulty speaking, eating or swallowing.

Find out more about dry mouth