Squad, CUs story mirrors mine. Reported to GP and tested numerous times, told not diabetic and no blood sugar problems apparent. More to the point, GP cannot suggest any way of managing the condition and I think believes it is hysteria.
Trust me, it isn't.
Whatever it is, my metabolism needs me to keep to regular protein intake, roughage and very little processed sugar. All I know is it works for certain, whereas what passes for medical advice round here has failed to help me.