Hyperglycaemia –  This is where your blood sugar levels are high.  Technically, anything above a reading of 8mmol/L is considered not normal.  However, hyperglycaemia is generally recognised at 13mmol/L onwards and signs and symptoms can start at as little as 15mmol/L onwards.  Some signs and symptoms can be; weight loss, excessive thirst, dehydration, excessive urination, excessive hunger, extreme tiredness and deep laboured breathing (Kussmauls Breathing).  If left unchecked the person will most likely slip into a coma and die.