Table 2.

Patient characteristics.

	Sex, age	Index chronic pain condition	Duration of chronic pain (y)	Comorbid painful conditions	Comorbid medical diagnoses	Analgesic medications	Intervention
1	F, 36	CRPS of left upper extremity	1.0	None	None	Pregabalin, amitriptyline, baclofen, oxycodone	Left stellate ganglion block
2	F, 57	CRPS of right upper extremity	0.5	Thoracic outlet syndrome	Endometriosis, bipolar 1, asthma, GERD, panic disorder	Naltrexone, cannabidiol, cyclobenzaprine, depakote, gabapentin, nortriptyline	Right stellate ganglion block
3	F, 33	Lumbar radiculopathy with right lower extremity pain	3.5	Sacroiliac joint dysfunction Postlaminectomy syndrome	None	Acetaminophen, celecoxib, cyclobenzaprine, duloxetine, ibuprofen, tizanidine, tramadol	Lumbar transforaminal epidural steroid injection at right S1
4	F, 66	Lumbar radiculopathy with left lower extremity pain	5.0	Lumbar spondylosis	Asthma, diabetes, hypertension, incontinence, Depression	Cyclobenzaprine, pregabalin	Lumbar transforaminal epidural steroid injection at left L5
5	F, 45	CRPS of left lower extremity	3.6	None	None	Alpha lipoic acid, tizanidine, tramadol, turmeric	Left lumbar sympathetic block
6	M, 37	CRPS of left upper extremity	1.0	Phantom limb pain	None	Diclofenac, nortriptyline, sertraline, pregabalin, amitriptyline	Left stellate ganglion block
7	F, 47	CRPS of left lower extremity	3.1	Migraine Knee osteoarthritis	Adhesive capsulitis, hypertension, GERD	Baclofen, cyclobenzaprine, gabapentin, ibuprofen	Left lumbar sympathetic block
8	F, 39	CRPS of right upper extremity	1.7	None	PCOS, hypertension, asthma, diabetes, depression	Meloxicam, naltrexone, pregabalin	Stellate ganglion block
9	F, 31	CRPS of right upper extremity	0.9	None	Depression	Acetaminophen, cyclobenzaprine, ibuprofen, methocarbamol, pregabalin, naltrexone	Stellate ganglion block
10	F, 42	Facet arthropathy with axial low back pain	3.1	Cervical radiculopathy Migraine Sacroiliac joint dysfunction	GAD, hypothyroidism	Gabapentin	Local anesthetic medial branch nerve blocks to facet joints at lumbar levels, left L3, L4, L5, and S1
11	F, 63	Lumbar radiculopathy of with bilateral lower extremity radiation	1.9	Sacroiliac joint dysfunction Postlaminectomy syndrome Lumbar radiculopathy	Hypothyroidism, GERD, hyperlipidemia	Celecoxib, cyclobenzaprine, gabapentin	Lumbar transforaminal epidural steroid injection (selective nerve root injection) at right L4
12	F, 35	CRPS of right lower extremity	0.4	Hip osteoarthritis	Anxiety, hypertension	Diclofenac, duloxetine DR, mirtazapine, naltrexone, pregabalin	Lumbar sympathetic block

CRPS, complex regional pain syndrome; F/M, female and male.