Correct. The fasting blood sugars (between like 1am and 4am) are a regular problem for diabetics and are very common. This is because of the sugar that is released from the liver; not because of any pain a person might be having. (Carbs cause the rise in bloodsugars after meals, and the sugar from the liver causes it at night) From personal experience - the fasting blood sugars (which oftentimes go undetected because the sugars return to normal by the time you are awake and testing) can raise your A1C. Been there, done that. During the day my sugars are controlled and stable.

However; when I am in a lot of pain, my blood sugars are high until well after the pain ends. In fact I was hospitalized last summer because of an ingrown toenail that I had absessed and threw me into DKA with unmanagable blood sugars. This has nothing to do with my fasting blood sugars; which are always high if I do not use medication to counteract it.

If this medication is being used to control pain, I could see where it would have an affect on blood sugars. (not the fasting ones)

I would still call the doc and ask. If you do not have pain perhaps he misunderstood the connection to the blood sugar control. And maybe it doesn't apply to you at all!