so im asleep i hyper will i know about it ?
Hi Steff, if you went high in your sleep, you would possibly be woken feeling very hot and swaeting, but possibly not. Hypers are very different from hypos. In a hypo, your brain is being starved of glucose, and this is the only fuel it can use, so it reacts quite dramatically and this is why hypo symptoms can be quite obvious. If things drop too low, there is also the possiblility of fitting, unconsciousness or even coma.
However, if your blood sugar is perfectly adequate for your brain to function happily, then it won't respond in the same way - if your blood sugar is high it has plenty of fuel and diesn't realise there is anything wrong. Instead, other parts of your body may react - your kidneys may start trying to remove the excess glucose from your bloddstream and you will want to pee more. Because of this removal of fluid from the body you will feel very thirsty. As a Type 2 not on insulin, it's most likely that you will still have sufficient insulin being produced to prevent ketones forming in any great quantities, and again, these will be flushed out by your kidneys.
So, you will feel some of these symptoms, but they are not as easy to recognise as a hypo, and will not lead to DKA as in a Type 1. If your blood sugar is reasonably well-controlled i.e. you have a good HbA1c and are eating/excercising normally, it's unlikely that you will develop a dangerously high BG level. As was said earlier, that's more likely in undiagnosed people who will feel ill over a number of days (HONK).
Hope that helps!
🙂