Mostly a “zinging” in my left posteriolateral ankle. It feels like a rubber band is being snapped against my ankle. Recently I had a prolonged episode (3 days) wherein it became painful and burning in quality and was more or less constant. It only went away when I did calf stretches combining with 50 mg Lyrica, but still zings on occasion. I first noticed it about 2 months ago in my car and it was very brief (1 second) and then I had a 45 minutes episode about 2 weeks ago, followed by the 3 day episode mentioned above that ended yesterday with the calf stretches/Lyrica.
I stand all day at work and I notice it is worse during that time. It is better with rest and at night. There is no weakness or sensory loss, just the zinging sensation and/or pain. It does not radiate down my legs or back, and straight leg raising is normal. It is worse with standing for long periods of time or walking. The only different thing I have done in the past 2 months is I started running again and have been doing intervals (2-3 miles on treadmill) a couple times a week with barefoot shoes (Vibrum 5 fingers).
Is this sural neuropathy? Or an S1 radiculopathy or some tendon issue? Whats the best non-surgical treatment for this?