PMID- 15563743 OWN - NLM STAT- MEDLINE DCOM- 20050503 LR - 20131121 IS - 0300-7995 (Print) IS - 0300-7995 (Linking) VI - 20 Suppl 2 DP - 2004 TI - Effectiveness of the lidocaine patch 5% on pain qualities in three chronic pain states: assessment with the Neuropathic Pain Scale. PG - S21-8 AB - OBJECTIVE: To determine the impact of the lidocaine patch 5% on pain qualities associated with chronic pain from postherpetic neuralgia (PHN), painful diabetic neuropathy (DN), and low-back pain (LBP), using the Neuropathic Pain Scale (NPS). PATIENTS AND METHODS: Patients with PHN, painful DN, and LBP were enrolled if they had partial response to gabapentin-containing analgesic regimens and if they reported moderate-to-severe pain on the NPS at study enrollment. Eligible patients were included in an open-label, non-randomized, prospective, 2-week study across 7 clinical trial sites in the United States. The lidocaine patch 5% was applied to the area of maximal pain, using no more than a total of 4 patches changed every 24 h. Patients were maintained on their other analgesic regimens with no dose adjustment or additions allowed. Treatment effect was measured by change from baseline to Week 2 in 4 composite measures of the NPS: NPS-10, NPS-4, NPS-8, and NPS-non-allodynia. Safety was assessed by adverse events (AEs), dermal assessment of application site(s), and skin sensory testing. RESULTS: In the combined patient population (n = 77), 2 weeks of treatment with the lidocaine patch 5% significantly improved all 4 composite measures (p < 0.01). In the subgroup analyses, the lidocaine patch 5% demonstrated numerical advantage for all 4 NPS composite measures for the PHN patients (n = 8), and significantly improved all 4 composite measures for the painful DN patients (n = 41; p < 0.001) and LBP patients (n = 28; p < or = 0.005). Overall, 8 patients (10%) experienced mild-to-moderate treatment-related AEs. CONCLUSIONS: The lidocaine patch 5% effectively reduces the intensity of all common pain qualities in patients with moderate-to-severe chronic pain resulting from PHN, painful DN, or LBP. Treatment is well tolerated in combination with other analgesic regimens, with no reports of serious AEs or adverse drug interactions. Assessment scales such as the NPS may offer the possibility to differentiate between various pain states and to assess treatment outcomes for various pain qualities associated with a given pain state. FAU - Argoff, Charles E AU - Argoff CE AD - Cohn Pain Management Center, North Shore University Hospital/NYU School of Medicine, Bethpage, NY 11714, USA. pargoff@optonline.net FAU - Galer, Bradley S AU - Galer BS FAU - Jensen, Mark P AU - Jensen MP FAU - Oleka, Napoleon AU - Oleka N FAU - Gammaitoni, Arnold R AU - Gammaitoni AR LA - eng PT - Clinical Trial PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't PL - England TA - Curr Med Res Opin JT - Current medical research and opinion JID - 0351014 RN - 0 (Anesthetics, Local) RN - 98PI200987 (Lidocaine) SB - IM MH - Administration, Cutaneous MH - Aged MH - Anesthetics, Local/*administration & dosage MH - Chronic Disease MH - Diabetic Neuropathies/complications MH - Female MH - Herpes Zoster/complications MH - Humans MH - Lidocaine/*administration & dosage MH - Low Back Pain/*drug therapy MH - Male MH - Middle Aged MH - Neuralgia/*drug therapy/etiology MH - Pain Measurement/*methods MH - Pilot Projects MH - Prospective Studies MH - Treatment Outcome EDAT- 2004/11/27 09:00 MHDA- 2005/05/04 09:00 CRDT- 2004/11/27 09:00 PHST- 2004/11/27 09:00 [pubmed] PHST- 2005/05/04 09:00 [medline] PHST- 2004/11/27 09:00 [entrez] AID - 10.1185/030079904X12960 [doi] PST - ppublish SO - Curr Med Res Opin. 2004;20 Suppl 2:S21-8. doi: 10.1185/030079904X12960.