G.B.
It is probable that this is due to the injections and it takes a while for these to go away. I am surprised your doctor never told you about these but he will when you go in. Look up "lipohypertrophy".
http://www.caring.com/questions/diabetes-lumps
Diabetes is a common "symptom" of adrenal disease in which the adrenal gland puts out too much hormones. Has anyone ever given you a saliva or urine 24 hr cortisol test? If they haven't, I would ASK them to do so. If they won't, you canand SHOULD get a saliva cortisol test purchased with your own money from ZRT by going to canaryclub.org. (about 100 bucks or so.)
Saliva cortisol test can show the diurnal pattern of cortisol release over the course of the entire day (very important for those with LOW cortisol levels). Urine cortisol mixes all the urine collected for the day together, so all you see is a "lump sum" of cortisol output. That is fine to see the lump sum if someone has high cortisol, but of one has low cortisol this test wont work. You need to see the way it is being released over the whole day, because it is the severe fluctuations in this pattern over the course of the day that will point to disease. The best choice of the two is always the saliva test.
If you do have high cortisol or aldosterone hormone output it is important to lower it because it not only causes diabetes, but heart failure, glaucoma, alzheimers, asthma, muscles aches and fatigue, dysregulated sex hormones, hyperthyroidism, low potassium and high cellular sodium, usually low magnesium levels, cell hyperplasia , skin diseases, and much more.
Look up Conn's and Cushings syndromes. MOST general MD's will not know that these issues are related, unsually only experts like endocrinologists would put them together. So do not be amazed when your doctor doesnt have a clue as to what i am talking about. Even endocrinologists are pretty lousy at diagnosing adrenal illness, sorry to say.
The adrenal hormone cortisol is responsible for blood sugar regulation. So it can cause diabetes in both high cortisol output, and low cortisol output. it is more commonly seen as "diabetes" in a high cortisol output. In low cortisol output, it might just be recognized as low blood sugar, or hypoglycemia.
I have studied medicine and endocrinology for years, as my daughter has Addisons disease (and hypoglycemia to go along with it, caused by her low cortisol.)
Gail