I have a 14 degree difference between my ankles - it is common with RSD. My doctor used a sensor that looked like one of the ear thermometers often used with children to take their temperatures. They are called infrared thermometers and I actually just ordered one. I ordered the "Tempir Body Temperature" thermometer. It got good ratings and only cost about $40.

It is SO uncomfortable, isn't it? I often wear two socks, an oversized frog slipper (yes, I said frog LOL) and then wrap my foot in a blanket. Trouble is, most days I can't get a slipper on my foot due to sensitivity, but some days I can, which is a big improvement for me! I look forward to being able to wear a shoe soon, especially with winter coming and the coldness of my foot being so significant.

Hang in there my friend - I hope this information helps you!

Pix