Very high blood sugar.
Hyperglycemia is a state in which there are high levels of glucose (also called blood sugar) in the blood. Hyperglycemia occurs in untreated or uncontrolled diabetics.
My son always knows his sugars are up if he's thirsty or urinating a lot. Sometimes it makes his stomach sick, too.
Hyperglycemia is also known as 'High Blood Sugar' and is a condition where an excess of glucose of circulating the body in the blood plasma. If left un-treated it can lead to organ damage.