Diabetes Mellitus is a disorder characterised by hyperglycaemia

http://www.for-diabetes.com/diabetes-mellitus-is-a-disorder-characterised-by-hyperglycaemia

Description

When the food we eat is digested, most of it becomes glucose (sugar), which the body uses for energy. In order for this to happen, the glucose must leave the blood and enter the body cells. The hormone that helps glucose enter the cells is called insulin. It is produced by an organ called the pancreas. In Diabetes, the pancreas either doesn’t produce insulin, or the body is unable to use the insulin properly. This causes glucose to build up in the blood instead of entering the cells, a process called hyperglycaemia.

- See more at: http://www.for-diabetes.com/diabetes-mellitus-is-a-disorder-characterised-by-hyperglycaemia