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Diagnosing and managing postherpetic neuralgia.
Srinivas Nalamachu1, Patricia Morley-Forster
1International Clinical Research Institute, Inc., Overland Park, KS 66210, USA. nalamachu@yahoo.com
Drugs & Aging
|October 6, 2012
Summary
Postherpetic neuralgia (PHN) is a debilitating pain condition. The lidocaine 5% patch offers effective topical treatment for PHN, with fewer side effects than systemic therapies.
Area of Science:
- Neurology
- Pain Management
- Infectious Disease
Background:
- Postherpetic neuralgia (PHN) is a chronic neuropathic pain condition following herpes zoster (shingles) infection.
- It disproportionately affects the elderly and immunocompromised, impacting quality of life.
- Effective prevention and management strategies are crucial due to the high prevalence of varicella zoster virus.
Purpose of the Study:
- To review the diagnosis and management of PHN.
- To evaluate the efficacy and safety of various PHN treatment options.
- To emphasize the role of topical therapies, particularly the lidocaine 5% patch.
Main Methods:
- Review of clinical data and treatment guidelines for PHN.
- Comparison of first-line and second-line pharmacotherapies for PHN.
- Assessment of systemic versus topical treatment approaches for PHN.
Main Results:
- Lidocaine 5% patch demonstrates superior efficacy and faster onset compared to capsaicin for topical PHN treatment.
- Topical therapies, especially lidocaine 5% patch, offer a favorable safety profile with limited systemic adverse events.
- Systemic therapies like TCAs and gabapentinoids are effective but carry risks, particularly in elderly or comorbid patients.
Conclusions:
- The herpes zoster vaccine should be considered for all individuals aged 60 and older.
- Lidocaine 5% patch monotherapy or combination therapy can provide rapid and effective PHN pain relief.
- Topical lidocaine 5% patch is a valuable option for PHN management, offering a good balance of efficacy and safety.
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