Nerve block, Trigger point injection, Ablation therapy, Radiofrequency ablation, Spinal cord stimulator insertion, Epid...ural steroid injection, Epidural blood patch, Peripheral nerve stimulation, Peripheral nerve block, Epidural, Back pain, Chronic pain, Complex regional pain syndrome, Peripheral nerve injury, Chronic pain syndrome , Osteoarthritis, Arthritis, Neck pain, Piriformis syndrome, Peripheral neuropathy, Sciatica, Neurogenic claudication , Central sensitization, Radiculopathy, Muscle spasms, Spondyloarthritis, Pain NOS, Nerve irritation