SCS vs DRG Stimulation for CRPS: What's the Difference?
At a Glance
SCS and DRG stimulators manage CRPS pain differently. SCS covers broad, migrating pain across the body. DRG stimulation targets localized pain in a specific area, like a foot or knee, and is highly effective at improving CRPS symptoms like temperature changes and skin sensitivity.
In this answer
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When considering advanced pain management options for Complex Regional Pain Syndrome (CRPS), your doctor may suggest either a Spinal Cord Stimulator (SCS) or a Dorsal Root Ganglion (DRG) stimulator. Both are advanced neuromodulation devices designed to interrupt pain signals before they reach your brain. It’s important to note that neither device is a cure for CRPS; rather, they are powerful tools to manage symptoms and improve your daily functioning [1].
The main difference between the two lies in how broadly they target pain. Traditional SCS modulates the spinal cord directly to cover larger, more widespread areas of pain [2]. In contrast, DRG stimulation targets a specific nerve cluster just outside the spinal cord, allowing for highly precise pain relief in isolated areas like a single foot, knee, or groin [3].
Understanding the Two Options
While both devices involve placing thin wires (leads) near the spine connected to a small battery (implantable pulse generator) placed under the skin—usually in the upper buttock or lower back [4]—they interact with your nervous system differently.
Spinal Cord Stimulation (SCS)
Traditional SCS places leads in the epidural space over the spinal cord itself [2]. This placement allows the electrical pulses to blanket a wider area of the body.
- Best for: Pain that is widespread, affects multiple limbs, or has a tendency to spread or migrate over time.
- How it feels: Traditional SCS often relies on paresthesia—a gentle tingling sensation that overlaps and masks the painful area [5]. Some newer forms of SCS (like high-frequency SCS) do not produce this tingling sensation [6].
Dorsal Root Ganglion (DRG) Stimulation
DRG stimulation places leads over the dorsal root ganglion, which is a bundle of sensory nerves located where the nerve roots exit the spinal cord [3]. Because each ganglion corresponds to a very specific part of the body, DRG stimulation offers high dermatomal specificity—meaning it can pinpoint the exact origin of the pain [2].
- Best for: Pain that is concentrated in a discrete, localized area, which is very common in lower limb CRPS [1].
- How it feels: DRG stimulation can provide pain relief with or without the tingling sensation of paresthesia [7][3].
Why Your Doctor Might Recommend DRG Over SCS (or Vice Versa)
For patients with CRPS, particularly in the lower limbs, clinical studies like the ACCURATE trial have demonstrated that DRG stimulation often provides a higher rate of treatment success compared to traditional SCS [8]. However, the choice depends heavily on your specific symptoms:
- Precision vs. Coverage: If your CRPS pain is strictly isolated to your foot and ankle, DRG stimulation can directly target that area without unnecessarily numbing or tingling the rest of your leg [9]. If your pain frequently migrates or covers both legs, the broader coverage of SCS may be more appropriate [2].
- Movement and Posture: Traditional SCS can sometimes cause the tingling sensation to fluctuate in intensity when you change positions (like standing up or lying down). DRG stimulation offers a much more stable stimulation intensity with less postural variation [8].
- CRPS-Specific Symptoms: DRG stimulation has been proposed to decrease sympathetic nerve activity (the part of your nervous system that controls blood vessels and temperature) [10]. This means it can be highly effective in resolving some of the visible symptoms of CRPS, such as temperature asymmetry (one foot being much colder or hotter than the other), allodynia (severe pain from light touch), skin flushing, and mottling (blotchy skin changes) [11].
- Prior Treatment Success: Sometimes patients find that the effectiveness of traditional SCS fades over time, a process known as therapy habituation [12]. Studies have shown that patients who did not get long-lasting relief from SCS may still achieve excellent results by switching to DRG stimulation [13][14].
Safety and Risks
Both SCS and DRG stimulation share very similar safety profiles [15]. Because they require a minor surgical procedure, there are risks of infection, bleeding, and device-related issues, such as the leads migrating out of place or fracturing over time [16][17]. The batteries will also eventually need to be surgically replaced, though rechargeable and non-rechargeable options are available [4].
Your doctor will typically require a “trial period” where the leads are placed temporarily (without the permanent battery) for about a week. This allows you to test whether the device reduces your pain and improves your function before committing to a permanent implant [18][19].
Living with the device: Once implanted, you will receive an identification card for airport security scanners. You will also need to discuss MRI compatibility with your doctor, as some—but not all—modern devices are safe for certain types of MRI scans [15].
Common questions in this guide
What is the main difference between SCS and DRG stimulation?
Will a nerve stimulator cure my CRPS?
Can DRG stimulation help with CRPS skin and temperature changes?
Do these stimulators cause a tingling feeling?
How will I know if a stimulator works for my pain before surgery?
Questions to Ask Your Doctor
Curated prompts to bring to your next appointment.
- 1.Am I a better candidate for traditional SCS, high-frequency SCS, or DRG stimulation based on my specific pain locations?
- 2.How much of my pain would need to be reduced during the temporary trial period for you to consider it a success?
- 3.What are the physical restrictions during the recovery period following a permanent implant?
- 4.If I choose an implanted device, what does it mean for my ability to get MRI scans in the future?
- 5.What are the pros and cons of a rechargeable versus a non-rechargeable battery for my lifestyle?
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References
References (19)
- 1
Cervical dorsal root ganglion stimulation for complex regional pain syndrome: Technical description and results of seven cases.
Rosado Caracena R, Mendiola de la Osa A, Rincón Higuera A, et al.
Pain practice : the official journal of World Institute of Pain 2023; (23(3)):242-251 doi:10.1111/papr.13183.
PMID: 36380700 - 2
Dorsal Root Ganglion Stimulation Used for the Treatment of Chronic Neuropathic Pain in the Groin: A Single-Center Study With Long-Term Prospective Results in 34 Cases.
Morgalla MH, Bolat A, Fortunato M, et al.
Neuromodulation : journal of the International Neuromodulation Society 2017; (20(8)):753-760 doi:10.1111/ner.12713.
PMID: 29131488 - 3
Dorsal Root Ganglion Stimulation Is Paresthesia-Independent: A Retrospective Study.
Verrills P, Mitchell B, Vivian D, et al.
Neuromodulation : journal of the International Neuromodulation Society 2019; (22(8)):937-942 doi:10.1111/ner.12921.
PMID: 30701632 - 4
Implantable Pulse Generator Site May Be Associated With Spinal Cord Stimulation Revision Surgeries.
Mehta SH, Hoelscher CM, Sharan AD, et al.
Neuromodulation : journal of the International Neuromodulation Society 2021; (24(8)):1336-1340 doi:10.1111/ner.12976.
PMID: 31215711 - 5
Burst SCS Microdosing Is as Efficacious as Standard Burst SCS in Treating Chronic Back and Leg Pain: Results From a Randomized Controlled Trial.
Vesper J, Slotty P, Schu S, et al.
Neuromodulation : journal of the International Neuromodulation Society 2019; (22(2)):190-193 doi:10.1111/ner.12883.
PMID: 30456795 - 6
Comparison of Paresthesia Coverage of Patient's Pain: Dorsal Root Ganglion vs. Spinal Cord Stimulation. An ACCURATE Study Sub-Analysis.
Deer TR, Levy RM, Kramer J, et al.
Neuromodulation : journal of the International Neuromodulation Society 2019; (22(8)):930-936 doi:10.1111/ner.12920.
PMID: 30624003 - 7
Spinal Cord Stimulation for Treating Chronic Pain: Reviewing Preclinical and Clinical Data on Paresthesia-Free High-Frequency Therapy.
Chakravarthy K, Richter H, Christo PJ, et al.
Neuromodulation : journal of the International Neuromodulation Society 2018; (21(1)):10-18 doi:10.1111/ner.12721.
PMID: 29105244 - 8
Dorsal root ganglion stimulation yielded higher treatment success rate for complex regional pain syndrome and causalgia at 3 and 12 months: a randomized comparative trial.
Deer TR, Levy RM, Kramer J, et al.
Pain 2017; (158(4)):669-681 doi:10.1097/j.pain.0000000000000814.
PMID: 28030470 - 9
Effect of Patient Characteristics on Clinical Outcomes More Than 12 Months Following Dorsal Root Ganglion Stimulation Implantation: A Retrospective Review.
Hagedorn JM, McArdle I, D'Souza RS, et al.
Neuromodulation : journal of the International Neuromodulation Society 2021; (24(4)):695-699 doi:10.1111/ner.13326.
PMID: 33508161 - 10
Functional coupling between chronic pain and the autonomic nervous system revealed by neuromodulation techniques. Comment on 'Effect of neuromodulation for chronic pain on the autonomic nervous system: a systematic review' (BJA Open 2024; 11: 100305).
Lefaucheur JP, Delon-Martin C, Hodaj H
BJA open 2025; (14()):100393 doi:10.1016/j.bjao.2025.100393.
PMID: 40223918 - 11
Dermatologic manifestations of complex regional pain syndrome improved after dorsal root ganglion stimulation.
Jaffee S, Kite TS, Valletta S, et al.
Surgical neurology international 2025; (16()):139 doi:10.25259/SNI_1000_2024.
PMID: 40353168 - 12
Therapy Habituation at 12 Months: Spinal Cord Stimulation Versus Dorsal Root Ganglion Stimulation for Complex Regional Pain Syndrome Type I and II.
Levy RM, Mekhail N, Kramer J, et al.
The journal of pain 2020; (21(3-4)):399-408 doi:10.1016/j.jpain.2019.08.005.
PMID: 31494275 - 13
Dorsal Root Ganglion Stimulation as a Salvage Treatment for Complex Regional Pain Syndrome Refractory to Dorsal Column Spinal Cord Stimulation: A Case Series.
Yang A, Hunter CW
Neuromodulation : journal of the International Neuromodulation Society 2017; (20(7)):703-707 doi:10.1111/ner.12622.
PMID: 28621025 - 14
Dorsal Root Ganglion Stimulation as a Salvage Therapy Following Failed Spinal Cord Stimulation.
Chapman KB, Spiegel MA, van Helmond N, et al.
Neuromodulation : journal of the International Neuromodulation Society 2022; (25(7)):1024-1032 doi:10.1016/j.neurom.2022.04.050.
PMID: 35760751 - 15
Noninfectious Complications of Dorsal Root Ganglion Stimulation: A Systematic Review and Meta-Analysis.
Vanloon M, Van Broeckhoven T, Raymaekers V, et al.
Neuromodulation : journal of the International Neuromodulation Society 2025; (28(2)):234-248 doi:10.1016/j.neurom.2024.10.010.
PMID: 39601733 - 16
Long-term explantation risk in patients with chronic pain treated with spinal cord or dorsal root ganglion stimulation.
Gatzinsky K, Brink B, Eyglóardóttir KL, Hallén T
Regional anesthesia and pain medicine 2025; (50(12)):923-929 doi:10.1136/rapm-2024-105719.
PMID: 39084704 - 17
A paramedian approach for dorsal root ganglion stimulation placement developed to limit lead migration and fracture.
Chapman KB, Spiegel MA, Dickerson DM, et al.
Pain practice : the official journal of World Institute of Pain 2021; (21(8)):991-1000 doi:10.1111/papr.13063.
PMID: 34328256 - 18
Spinal cord stimulation protocols for modern pain management: from two-stage models to direct-to-implant strategies.
De Negri P, De Negri C, Turco F
Pain management 2025; (15(12)):1035-1046 doi:10.1080/17581869.2025.2577089.
PMID: 41123983 - 19
Clinical study of short-term spinal cord stimulation for herpes zoster-associated pain.
Zuo L, Su A, Xie Y, Yang X
European journal of medical research 2024; (29(1)):603 doi:10.1186/s40001-024-02196-6.
PMID: 39702473
This page is for informational purposes only and does not replace professional medical advice. Always consult your pain management specialist to determine if SCS or DRG stimulation is the right treatment for your CRPS.
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