Have you tried Hypericum Perforatum? It is a homeopathic remedy for pain or other sensation that follows the nerve path. For example when touching one's ankle might cause pain or a burning sensation in the entire leg or even in the back.

Other uses for this remedy described at *edit*
If you have tried this remedy, please post the results of your taking it.

It is available as sub-lingual pellets/tablets and also as a topical spray.

Note that all internal homeopathic remedies must be taking on an empty stomach and clean mouth (and not after a recent tooth brushing).