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Korean J Pain. 2011 Mar;24(1):53-56. English. Case Report.
Yu HK , Lee JH , Cho SH , Kim YI .
Department of Anesthesiology and Pain Medicine, Bucheon Hospital, College of Medicine, Soonchunhyang University, Bucheon, Korea.

Although postherpetic neuralgia (PHN) is a common chronic pain syndrome, the pathophysiology of this disorder is not well known and management is often very difficult. N-Methyl-D-Aspartate (NMDA) receptor antagonists are known to be effective in PHN, and magnesium, a physiological blocker of NMDA receptors, is widely used to treat various chronic pain disorders. Here, we present a case of the PHN refractory to conventional treatment, which was treated successfully with transforaminal epidural injection of magnesium sulphate at the affected dermatome.

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