Vaporizing provides immediate relief and I would look for an indica or CBD rich variety. I might also try a whole plant tincture extract of cannabis that contains CBD and THC as well as the other naturally occuring components. A good starting dose would be 10 milligrams of cannabinoids two or three times per day. Observe closely for effects and adjust the dose as needed. Topical cannabis can also be very helpful, and you may want to try a trans-dermal patch.