Ask a Neurologist. Get Answers to Your Neurology Questions.
This is Dr. David
I am sorry you are having on and off leg and arm cramps
there are many possible causes
you could have a pinched nerve or stenosis of your spinal cord
you could have periotic low potassium or low magnesium blood levels
you could be having poor circulation into your arms or legs.
you could have a pinched nerve in your lower back.
there are medical tests which can check for these issues
but you have to see a doctor to get testing
do you have a doctor you can see who can run some tests for you?