Husband has had major pain iissues in his back for his entire life due to childhood trauma. Has had epidurals, facet
injections, Radio frequency Ablation, plus Stim electronic testing, and is on percocet. He has been to physical therapy many times over the years. He asked about botox injections into the muscle that causes the pain and was told that was a last resort. Then the doc prescribed muscle relaxers that he is already on. What makes botox the last resort?