Sorry for your troubles. As I read your post I wondered if the trauma from the bus ride could have bruised branching nerves. Although I would think the Lumbar would be involved rather than the Thorasic as the legs and feet were involved. I had a car accident that was relatively gentle but induced a hard shock up my right side. Three days later my journey started as symptoms started popping up. I was in poor control as a diabetic at the time of the accident. Did you have any issues before the bus trip? Good Luck, Ken in Texas.