ge – you are doing less physical exercise, you are under stress (emotional distress, excitement), or if you have an injury, operation, feverish illness or certain other diseases, n – you are taking or have taken certain other medicines (see section 2, “Taking other medicines”). lo Symptoms that may tell you that your blood sugar levels are too high: thirst, increased need to pass water, tiredness, dry skin, reddening of the face, loss of appetite, low o