I have a strange pulsating sensation throughout my body that only lasts for approximately a minute or two before subsiding. It is very noticeable when I retire at night, however, I experience it throughout the day. Should I be concerned. I do have low back fusion, neck fusion and am currently being treated for intercostal neuralgia. The symptoms started around the same time I started treatment with Topamax and underwent nerve blocks in thoracic area to determine nerves involved.