Hi
@Happy2bepart,
Someone here as your 'juniour' at 52 years on insulin:
Just to clear the deck: i am assuming all the other possibilities like stress, infection, out-of-date insulin, spoiled insulin, insulin leaking from ampoule, underlying conditions like endocrine conditions -adrenal, thyroid etc and others have been excluded.
At 45 years on insulin i changed to an insulin pump because of needing 8 plus injections per day in an attempt to keep bsls under control, but suffering nightime hypos as a consequence.
That went well for some years and then bsls would rise for no apparent reason usually nearer the end of the 3 day course before change of cannula site etc.
What was theorised was that after so many years of injections into the abdomen and then some with a pump that scar tissue had built up and the cannulas were sometimes situated in that tissue keading to either variable absorption of insulin or a limit of infusion as maybe the scar tissue was unable to continue to give way as insulin was injected and thus created back pressure on the infusion set, but insufficient to set off obstruction alerts.
The solution which has succeeded (so far) was to change the length of my cannulas on the theory that scar tissue may not have formed at that level.
Of course there is still the need to avoid injecting into muscle, unless as part of my sick day plan which was worked out with my nurse for high bsls and rising ketones.
After even 45 years on injections i must admit to not being able to be certain whether the next place i chose on my abdomen was a previously used site or not. And moreso with inserting pump cannulas.
There is some opinion that a cannula infusing insulin over 3 days or so in one spot is likely to cause more scar tissue formation than separate injections of insulin.
So as well as trying completely to choose new areas for injection, would it be worth discussing with your nurse and doctor trying a different length of needle.?
The other thought is whether over time your body has developed antibodies to the particular insulins you have been prescribed.
It was something which occurred with people on beef insulin in the past and some have had reactions to newer insulins.
So the question is could some antibodies have formed and tend to neutralise the effect of the insulin you inject?
My guess is that an endocrinologist it probably the one to consult about the possibility of formation of antibodies to insulin and what might be done about it.
I have a further thought but will PM you about it.