So sorry you're having all these problems.
p.s. I hope you didn't come off the Effexor cold turkey???
Akathisia is the term for the feeling of inner restlessness that is a potential side-effect for some people taking certain medications. I looked up the info. on Effexor to see if it mentioned numbness in any of the 'Adverse Reactions' section. It mentions Asthenia. That is more of a weakness or loss of strength.
http://www.wyeth.com/content/showlabeling.asp?id=100
You sound as if you've got much more than that happening from what you've written and hopefully as you get the Effexor out of your system, everything will settle down for you.
Please post over on the Medications forum too if you can.
NeuroTalk Medications Forum
This must be a very worrying time for you. I hope you go back to the doctor very soon to get it all sorted out.
take care