Targeting Neuroinflammation and Peripheral Nerve Dysfunction in Refractory Postherpetic Neuralgia: A Multimodal...

Area of Science:

• Pain Management
• Neurology
• Interventional Procedures

Background:

• Postherpetic neuralgia (PHN) is chronic neuropathic pain often resistant to standard treatments.
• Interventional strategies like steroid and 5% dextrose water (5DW) injections are explored for refractory cases.
• Limited evidence exists on the combined efficacy of steroid and 5DW injections for PHN.

Purpose of the Study:

• To evaluate the feasibility and effectiveness of combined steroid and 5DW injections for refractory PHN.
• To assess pain reduction and response patterns across different dermatomes in PHN patients.

Main Methods:

• Four patients with refractory PHN received ultrasound-guided steroid injections combined with intralesional 5DW injections.
• Injections targeted specific nerves or epidural spaces based on PHN distribution (V1, L2-L3, C4-T4, T2-T4).

Main Results:

• All four patients experienced clinically meaningful pain reduction (>50% decrease in VAS scores) within 2-3 weeks.
• Consistent pain relief was observed across different dermatomal distributions.
• No adverse events or complications were reported during or after the procedures.

Conclusions:

• Combined steroid and 5DW injections appear to be a feasible multimodal approach for managing refractory PHN.
• This combination may offer synergistic benefits by targeting both neuroinflammation and nerve dysfunction.
• Further controlled studies are needed to confirm efficacy and optimal use in PHN treatment algorithms.