Others may have more scientific advise.But from what you say the PAIN and Nerve issues can be HELPED and Decreased HOPEFULLY with the use of INDICA Strains..Indicas Are more of the Pain and body Effecting Herbs as the Sativas Are more of a Euphoric and Mind Uppity Effect.Check this site out it list almost all strains and there medicinal uses..

Marijuana Strain Reviews and Guide - Leafly