<s>[INST] In the last week, my 5 year old has become extremely thirsty. He can t seem to get enough to drink. He drinks one thing after another and is not satisfied. This morning he drank 2 full glasses of water and then threw it up. He has also been complaining of a bad taste in his mouth. I am worried...I have heard this is a sign of diabetes...is this true and are there other things that can be causing this? [/INST] Diabetes at 5 yrs of age is not unlikely .Increased thirst should be associated with increased urination too. also increased appetite.is there a family history of diabetes ? its been only a week, so if he has same symptoms one more week , or any worsening , go to a doctor. </s>