Successful Reversal of Hyperalgesia/Myoclonus Complex with Low-Dose Ketamine Infusion
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We report the successful use of low-dose ketamine infusion for treating a severe episode of painful myoclonus in the lower extremities, associated with opioid-induced hyperalgesia (OIH), in a patient who was receiving long-term, high dose intrathecal hydromorphone therapy. A low-dose ketamine infusion immediately relieved the painful myoclonus. It also enabled a reduction in the intrathecal opioid dosage leading to a resolution of the acute symptoms attributed to OIH.
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