Lidocaine Patches for Neuropathic Pain Management

Introduction to Lidocaine Patches

The American College of Physicians recommends lidocaine patches as a first-line therapy for postherpetic neuralgia, with a number needed to treat (NNT) of 2, making them one of the most effective treatments available for this condition 1
Lidocaine patches demonstrate exceptional efficacy for postherpetic neuralgia, with approximately 60% of patients achieving moderate to complete pain relief with proper 12-hour daily application 2

The National Comprehensive Cancer Network recommends lidocaine patches for cancer-related neuropathic and myofascial pain, with stronger evidence than other topical agents 3
Lidocaine patches are effective for painful diabetic polyneuropathy, particularly for nighttime foot pain, and demonstrated efficacy in HIV-associated peripheral neuropathy 2
The American Pain Society suggests lidocaine patches for myalgias, arthralgias, and myofascial pain as part of localized therapy approaches 3

Apply up to 3-4 patches simultaneously to intact skin covering the painful area, with a standard regimen of 12 hours on, 12 hours off, and available in 4% over-the-counter concentration or 5% prescription strength 4, 3, 2
Minimal systemic absorption occurs even with four patches applied over 24 hours, with highest measured blood levels at only 0.1 micrograms/ml, and pharmacokinetic studies confirm systemic lidocaine levels remain within safe range 4, 3

The American Academy of Neurology recommends adding gabapentin starting at 50-100 mg three times daily, titrating to 900-3600 mg daily for neuropathic pain components, and consider pregabalin 50 mg three times daily, titrated to 100 mg three times daily if gabapentin fails 1, 3, 2
Capsaicin 8% patch provides pain relief lasting up to 90 days from single application, and capsaicin 0.075% cream has an NNT of 3.26 for postherpetic neuralgia 1, 2

Avoid excessive heat application over patches, as this increases systemic absorption, and remove patches before starting intravenous lidocaine therapy, with monitoring for signs of systemic absorption: dizziness, confusion, bradycardia, drowsiness, disorientation, muscle twitching 4, 3, 2
Do not apply to broken or inflamed skin, as this dramatically increases systemic absorption and toxicity risk, and do not exceed 12 hours of continuous application to ensure adequate patch-free period and minimize skin irritation 4, 3, 2

The patches may be useful for localized neuropathic pain but are less effective for widespread pain distribution, as noted by the Diabetes Care guideline 5

The American Academy of Neurology guideline classified the lidoderm patch as "possibly effective" for painful diabetic neuropathy based on Class III evidence showing 20-30% reduction in pain scores and 70% of patients experiencing more than 30% decrease in pain, with a recommendation for lidocaine patches as first-line therapy for postherpetic neuralgia 6

If inadequate pain relief after 4 weeks of patch therapy, consider adding gabapentin starting at 50-100 mg three times daily, titrating to 900-3600 mg daily for neuropathic pain components, or adding capsaicin 8% patch for single application providing pain relief lasting up to 90 days, pre-treating with lidocaine cream for 60 minutes before capsaicin application 7

In patients with herpes zoster‑related neuropathic pain, lidocaine cream formulations may be employed as an alternative to patches when patch adhesion is difficult or when the affected area is small, providing a practical topical option [8][9] .