Hi,
Lantus is associated with the sort of pain you describe. 3 years ago I was mis-diagnosed with fibromyalgia after suffering constant pain in my shoulders, arms, chest and cramps and pains in my legs. I could barely carry a light shopping bag or hold my arms up. I had first been referred to physio and when she could find nothing wrong, a rheumatologist. He too was at a loss. Because I had been feeling exhausted and ill also, he suggested it could be fibromyalgia, which has similar symptoms to ME. I was so desperate for a diagnosis at that point, that I was relieved.
However it was not Fibromyalgia but a side-effect of Lantus, and a commonly reported one too.
Since coming off it in May 2008 an switching to pork, I no longer suffer from the afore-mentioned ailments. I have also been in contact with many other people who have experienced similar side-effects and worse on synthetic insulins,but particularly Lantus.
I also had erratic inconsistent BG control, daily it would go from 2-15(or higher :evil: ). My consultant said that was ok,so long as it came down again!
Funny thing is that having been type-1 for nearly 20 years at that point, I had not got a clue that synthetic insulins could cause any side-effects. I was only ever concerned about the preservatives-you live and you learn
Please give the IDDT(insulin dependent diabetes trust) a call. The number is on their website, that's worth a look too.
Jus