Your antidepressant, is not used much in US anymore because really it is not very good for depression and has a boatload of
side effects:

http://www.drugcite.com/?q=paxil
This site is compilation of FDA medwatch reports. You can see by the graph that reports have fallen off yearly and that is because this drug is no longer used much in the US anymore.

Click on "neurological" and see the side effects there including paresthesias.

Glaxo is big in UK and probably that is why you were offered it.
But there is controversy here about it for many years, and there are even forums that discuss how it doesn't work and is very habituating.
http://www.weitzlux.com/paxil/withdr...oms_14809.html
Getting off Paxil is supposedly awful and there have been websites/forums on the net discussing just this one topic for years.

Better would be amitriptyline or nortriptyline, in low dose. This is used for chronic headache too. There are beginning studies showing this drug can also help with nerve repair. These tricyclics have been mainstays for PN pain and chronic pain for quite a while in the US.