Yes I have degenerative arthritis in the lower lumber and stenosis in the lower back. One day I twisted in bed and heard something pop like when you crack a knuckle. After that my back felt better and I had no pressure, which was constant before. Then I started to get this pulsing vibration from the bottom of my right foot up my leg , back chest to my right shoulder. This was in Jan. of last yr., it gets louder when I m tired or startled. Feb. 22 I went to my Doctor, my blood pressure was up, and I was stressed and wired, could not sleep due to this vibrating.. Couldn t take meds. because it gave me side effects. Told doctor let me see if I can calm my self. Finally did. He thought this vibration was my blood pressure. When my blood pressure is at 125/72, I m still vibrating. I had an MRI in Sept. before this happened in Jan. Could it be spinal fluid. It drives you crazy. Sometimes it goes away. If I get startled it rumbles like a train. I hear alot of people complain about this, but no one knows what it is.