AzDi - surely no need to apologize! We all do what we can within our personal limits. Chime in whenever you feel up to it :-)
Yup! I get similar sensations. I call the horrible ones "zingers". Those seem random, haven't associated it with any one thing.
Zookester - I get the ice water running down my calf. Also, the foot thinks its cold and wet when its certainly warm and dry. I also have painful numbness in my foot that worsens when I walk. Occasionally I get burning when I wake up in the moning, but mostly it feels like my leg is submerged in icy water. Its a mess.