TY - JOUR
T1 - Efficacy of lidocaine patch 5% in the treatment of focal peripheral neuropathic pain syndromes: A randomized, double-blind, placebo-controlled study
AU - Meier, Torsten
AU - Wasner, Gunnar
AU - Faust, Markus
AU - Kuntzer, Thierry
AU - Ochsner, François
AU - Hueppe, Michael
AU - Bogousslavsky, Julien
AU - Baron, Ralf
N1 - Funding Information:
The multicenter study was supported by IBSA (Pambio-Noranco, Switzerland). We thank Dr S. Rovati, Dr S. Kussmann, and Dr G. Mautone for coordination and management of this project, and Dr B. Chinea from IBIS Informatica and IDEE s.r.l., Milan, Italy, for statistical analysis.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2003/11
Y1 - 2003/11
N2 - Peripheral neuropathic pain syndromes (PNPS) are difficult to treat because commonly used analgesics are often ineffective when, for example, touch-evoked allodynia, hyperalgesia, and pain paroxysms are present. To investigate whether lidocaine patch 5% treatment is also effective in postherpetic neuropathy (PHN) and in other PNPS, 40 patients with various forms and localizations of PNPS completed a prospective, randomized, placebo-controlled, two-way, cross-over study in three medical hospitals. Patients suffering from pain in a localized skin area with intensity above 40 mm visual analog scale (VAS) and a stable consumption of pain medication were included in this study. The study was divided into four phases: 3-day run-in phase, treatment phase 1, wash-out period, and treatment phase 2, each lasting 1 week. At the discretion of the patients, up to four patches (covering a maximum of 560 cm2) were applied onto the maximally painful area for 12 consecutive hours daily, always either by day or at night. Throughout the four phases, ongoing pain, allodynia, quality of neuropathic symptoms, quality of sleep, and adverse events were assessed. When, after the wash-out period, the pain intensity scores did not return to the pre-treatment values (±20%), these patients were excluded from the study. The present study revealed that, as an add-on therapy, the lidocaine patch 5% was clearly effective in reducing ongoing pain (P=0.017) and allodynia (P=0.023) during the first 8 h after application and that the patches also worked well over a period of 7 days (P=0.018) in diverse focal PNPS. Calculation of the numbers needed to treat (NNT) to obtain one patient with more than 50% relief of ongoing pain revealed that the NNT of 4.4 in the present study compared reasonably well with other studies of PHN, such as topically applied capsaicin (NNT: 5.3-∞) or systemic treatment with gabapentin (NNT: 3.2-5.0).
AB - Peripheral neuropathic pain syndromes (PNPS) are difficult to treat because commonly used analgesics are often ineffective when, for example, touch-evoked allodynia, hyperalgesia, and pain paroxysms are present. To investigate whether lidocaine patch 5% treatment is also effective in postherpetic neuropathy (PHN) and in other PNPS, 40 patients with various forms and localizations of PNPS completed a prospective, randomized, placebo-controlled, two-way, cross-over study in three medical hospitals. Patients suffering from pain in a localized skin area with intensity above 40 mm visual analog scale (VAS) and a stable consumption of pain medication were included in this study. The study was divided into four phases: 3-day run-in phase, treatment phase 1, wash-out period, and treatment phase 2, each lasting 1 week. At the discretion of the patients, up to four patches (covering a maximum of 560 cm2) were applied onto the maximally painful area for 12 consecutive hours daily, always either by day or at night. Throughout the four phases, ongoing pain, allodynia, quality of neuropathic symptoms, quality of sleep, and adverse events were assessed. When, after the wash-out period, the pain intensity scores did not return to the pre-treatment values (±20%), these patients were excluded from the study. The present study revealed that, as an add-on therapy, the lidocaine patch 5% was clearly effective in reducing ongoing pain (P=0.017) and allodynia (P=0.023) during the first 8 h after application and that the patches also worked well over a period of 7 days (P=0.018) in diverse focal PNPS. Calculation of the numbers needed to treat (NNT) to obtain one patient with more than 50% relief of ongoing pain revealed that the NNT of 4.4 in the present study compared reasonably well with other studies of PHN, such as topically applied capsaicin (NNT: 5.3-∞) or systemic treatment with gabapentin (NNT: 3.2-5.0).
UR - http://www.scopus.com/inward/record.url?scp=0142196073&partnerID=8YFLogxK
U2 - 10.1016/S0304-3959(03)00317-8
DO - 10.1016/S0304-3959(03)00317-8
M3 - Journal articles
C2 - 14581122
AN - SCOPUS:0142196073
SN - 0304-3959
VL - 106
SP - 151
EP - 158
JO - Pain
JF - Pain
IS - 1-2
ER -