Wallace M, Pappagallo M. Qutenza®: a capsaicin 8% patch for the management of post herpetic neuralgia. Expert Rev Neurother. 2011;11(1):15–27.PubMedCrossRef

Simpson DM, Brown S, Tobias J, et al. Controlled trial of high-concentration capsaicin patch for treatment of painful HIV neuropathy. Neurology. 2008;70(24):2305–13.PubMedCrossRef

Phillips TJ, Cherry CL, Cox S, et al. Pharmacological treatment of painful HIV-associated sensory neuropathy: a systematic review and meta-analysis of randomised controlled trials. PLoS One. 2010;5(12):e14422. Epub2010 Dec 28.CrossRef

McCleane G. Topical application of doxepin hydrochloride, capsaicin and a combination of both produces analgesia in chronic neuropathic pain: a randomized, double-blind, placebo-controlled study. Br J Clin Pharmacol. 2000;49(6):574–9.PubMedCentralPubMedCrossRef

Lynch ME, Clark AJ, Sawynok J, et al. Topical 2% amitriptyline and 1% ketamine in neuropathic pain syndromes: a randomized, double-blind, placebo-controlled trial. Anesthesiology. 2005;103(1):140–6.PubMedCrossRef

Lynch ME, Clark AJ, Sawynok J, et al. Topical amitriptyline and ketamine in neuropathic pain syndromes: an open-label study. J Pain. 2005;6(10):644–9.PubMedCrossRef

Lynch ME, Clark AJ, Sawynok J. A pilot study examining topical amitriptyline, ketamine, and a combination of both in the treatment of neuropathic pain. Clin J Pain. 2003;19(5):323–8.PubMedCrossRef

Quan D, Wellish M, Gilden DH. Topical ketamine treatment of postherpetic neuralgia. Neurology. 2003;60(8):1391–2.PubMedCrossRef

Greenway FL, Frome BM, Engels TM, et al. Temporary relief of postherpetic neuralgia pain with topical geranium oil. Am J Med. 2003;115(7):586–7.PubMedCrossRef

Barthel HR, Axford-Gatley RA. Topical non-steroidal anti-inflammatory drugs for osteoarthritis. Postgrad Med. 2010;122(6):98–106.PubMedCrossRef

Mazieres B, Rouanet S, Velicy J, et al. Topical ketoprofen patch (100 mg) for the treatment of ankle sprain: a randomized, double-blind, placebo-controlled study. Am J Sports Med. 2005;33(4):515–23.PubMedCrossRef

Mazieres B, Rouanet S, Guillon Y, et al. Topical ketoprofen patch in the treatment of tendonitis: a randomized, double blind, placebo controlled study. J Rheumatol. 2005;32(8):1563–70.PubMed

White RL. Ketoprofen gel as an adjunct to physical therapy management of a child with Sever disease. Phys Ther. 2006;86(3):424–33.PubMed

Predel HG, Koll R, Pabst H, et al. Diclofenac patch for topical treatment of acute impact injuries: a randomized, double blind, placebo controlled, multicenter study. Br J Sports Med. 2004;38(3):318–23.PubMedCentralPubMedCrossRef

Galer BS, Rowbotham MC, Perander J, et al. Topical diclofenac patch significantly reduces pain associated with minor sports injuries: results of a randomized, double-blind, placebo-controlled, multicenter study. J Pain Symptom Manage. 2000;19:287–94.PubMedCrossRef

Jenoure P, Segesser B, Luhti U, et al. A trial with diclofenac HEP plaster as topical treatment in minor sports injuries. Drugs Exp Clin Res. 1993;19:125–31.PubMed

Marten M. Efficacy and tolerability of a topical NSAID patch (local action transcutaneous flurbiprofen) and oral diclofenac in the treatment of soft-tissue rheumatism. Clin Rheumatol. 1997;16:25–31.CrossRef

Campbell J, Dunn T. Evaluation of topical ibuprofen cream in the treatment of acute ankle sprains. J Accid Emerg Med. 1994;11:178–82.PubMedCentralPubMedCrossRef

Airaksinen O, Venalainen J, Pietilainen T. Ketoprofen 2.5% gel versus placebo gel in the treatment of acute soft tissue injuries. Int J Clin Pharmacol Ther Toxicol. 1993;31:561–3.PubMed

Machen J, Whitefield M. Efficacy of a proprietary ibuprofen gel in soft tissue injuries: a randomized, double-blind, placebo-controlled study. Int J Clin Pract. 2002;56(2):102–6.PubMed