Adrenaline increases the sugar in your blood. Her stress response, overactivated by the recent trauma, increased her adrenalinehence much more sugar in her blood. The dose of insulin that had worked in the past was no longer adequate. Furthermore, when she was exposed to any evocative cue, such as the sirens, her sensitized system had an overreaction, releasing very high levels of adrenaline and, in turn, leading to a huge release of sugar.

What Happened To You? by Bruce D. Perry