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Thanks for your question.
This indeed is a difficult problem.
In addition to lyrica you may try applying capsaicin gel to the painful areas.This is available over the counter and may help.
Lidocaine patches are available with prescription and help numb the area so that pain does not occur.
Nortyptiline or doxepin can be added to your lyrica for pain relief.
Do get your vitamin b12 levels checked as there deficiency may also be responsible.