I am new to this site as well. I am on my 6th month of PCS and have experienced the exact same sensation of feeling restless and running my hands over my arms and legs. It feels like all the nerves in my body are tensed up. At the same time it also feels like a shaky weakness (even though I don't seem to be physically weak.) Otherwise my most persistant issue has been nausea. I've just gotten wrist bands that are available at any drugstore that somehow help the nausea. I don't know how it works but it's the same principle as acupunture pressure points.