I have been seeing a podiatrist for years because I could not cut my toenails without terrible stomach cramping. Part of the regular routine is testing blood flow and blood pressure in my legs, feet and toes. Also nerve conduction by touch and by tuning fork vibration. I also have no ongoing pain, but I do experience some peculiar cramping at night sometimes. However, like you , my balance is hopeless and my gait very unstable. Recently, I had my GP refer me to an Exercise Physio;ogist. Now. after 10 weekly visits,I can see and feel vast improvements in balance and general stamina. Most importantly, I am coming to accept that I MUST do the targeted exercises for the rest of my life, in order to regain and maintain functional mobility. This is a big mental shift for me!
The balance exercises on Youtube by Doug Weiss, I find very good!