I am a 54 yr old male, in pretty good shape, non-smoker, non-drinker. For the past 2 years I have experienced pain in the left side of my chest with tingling in the left arm. I've seen 2 cardiologists and had a complete exam including an angiogram, showing no heart disease. Since then I've seen gastroenterologists, pulmonologists, and pain specialists.
My new doctor suggested PHN and tested me for the virus anitbody, which I have. But I have never had any outbreak of shingles on the skin. I've been on 300 mg of Gabapentin for 3 weeks now, and am using Capcaicin, but still have pain. It feels like it's getting progressively worse.
I'm not so sure about my Doctor's diagnosis. How can I know for certain?
How long does Gabapentin need to take effect?
Would a nerve block positively confirm the PNH diagnosis?
Any other tests to confirm this diagnosis?
Thank you.
Hi, post herpetic neuralgia is usually confined to specific location only, in your case it is quite generalized which could be either due to low vitamin B levels, low calcium etc.
Treatment of post herpetic neuralgia are antidepressants, anticonvulsants (such as gabapentin or pregabalin) and topical agents such as lidocaine patches or capsaicin lotion. Opioid analgesics may also be appropriate in many situations. For more information visit http://en.wikipedia.org/wiki/Postherpetic_neuralgia