This is a little unusual to be both upper and lower extremities.
Typically we look for circulation issues. Pulses equal,any color changes, etc. If those are normal then we think of nerve compression.
With Nerve compressed there is usually accompanying numbness, pain of varying degrees, muscle mass differences, etc.
But not all symptoms need to be present for either condition to be there.
So, your question was what to ask your provider about...
1 - Be sure to tell him how bothersome it is, any changes you notice. IF you have any weakness on that side compared to the other or decreased grip or leg not as strong, etc.
2 - Ask if he thinks it is a circulation issue or a nerve issue.
3 - If he does not address the issue to your satisfaction you could ask to be referred to a neurologist. They would be a good place to start.
SO the main thing is to tell him specifically your concerns and any changes you have noticed. Make your appointment for just this one thing, It will take time and a whole office visit to just address this issue. I would encourage you not to see him for other reasons and then say "Oh, by the way...". We tend not to have the time to really focus on the "by the way or while I am here" complaints. :)