Lidocaine infusions help relieve pain in unresponsive chroni
In this retrospective study, the authors analyzed the hospital records of 609 patients who were admitted with refractory chronic migraine and treated with infusions of lidocaine to assess the short- and medium-term benefits of this approach. Patients included in the analysis had experienced at least 8 debilitating headache days per month for at least 6 months and failed to respond to or had contradictions to the seven classes of medicine for migraine. Patients received lidocaine infusions over several days along with other aggressive drug treatments for migraine, such as ketorolac, magnesium, dihydroergotamine, methylprednisolone, and neuroleptics.

Most patients (87.8%) experienced rapid pain relief. At the time of admission, the median rating given by patients was 7.0 and this decreased to 1.0 by the time of hospital discharge. Patients attending follow up appointments around one month after discharge also reported that the number of headache days that they experienced had fallen. The 266 patients who attended these appointments, which took place between 25 and 65 days after discharge, said that the number of headache days in the last month had fallen from a mean of 26.8 to 22.5.
Some patients experienced nausea and vomiting during the treatment but all adverse events experienced were mild.

Lidocaine may be a viable treatment option for patients with refractory chronic migraine who have failed other treatments.

Source: https://www.eurekalert.org/news-releases/953347
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