Non-invasive Brain Stimulation for Central Neuropathic Pain

Area of Science:

• Neurology
• Pain Management
• Neuroscience

Background:

• Noninvasive brain stimulation (NIBS) is increasingly researched for neuropathic pain (NP).
• Central neuropathic pain (CNP) presents a significant clinical challenge.
• Understanding NIBS effectiveness and limitations in CNP treatment is crucial.

Purpose of the Study:

• To review the effectiveness and limitations of NIBS for treating common central neuropathic pain (CNP).
• To summarize research progress and mechanisms of NIBS in various CNPs.
• To identify current research deficiencies and future directions.

Main Methods:

• Review of existing literature on noninvasive brain stimulation techniques for CNP.
• Analysis of research on repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS).
• Examination of studies on the effects and mechanisms of NIBS on pain processing and regulation.

Main Results:

• Repetitive transcranial magnetic stimulation (rTMS) has mature research and application in CNP treatment.
• Optimal parameters for transcranial direct current stimulation (tDCS) in specific CNPs remain challenging to define.
• Both rTMS and tDCS modulate cortical excitability, synaptic plasticity, neurotransmitter release, and brain connectivity.

Conclusions:

• NIBS techniques like rTMS and tDCS offer potential for CNP analgesia by altering brain function.
• Current studies suffer from small sample sizes, placebo effects, and limited mechanistic insights.
• Future research requires large-scale, multicenter trials to validate NIBS efficacy and reliability for CNP.