Hypoglycaemic shock occurs when there is a low level of blood sugar, the cells in the body use sugar from carbohydrates for energy. The Pancreas makes insulin and this helps keep the blood sugars from getting too high.
When the levels are too high this can cause severe dehydration which in its self can be life-threatening, if sugar is excessively consumed over time it can seriously damage the eyes, heart and nervous system.
In non-diabetics, the production of insulin is regulated so the body only produces what it needs to control sugar levels in the body.
In diabetics, the body may not make its own insulin or the body does make its own the body may not be able to effectively use it, and so medication is used to increase the amount of insulin in the body.
Hypoglycaemia is the reaction to too much insulin in the body and this speeds up the lowering of the blood glucose level if the person has not eaten they will burn blood sugars quicker, or if they are enduring physical activity then the blood sugar becomes dangerously low.