Dihydroergotamine infusion for pediatric refractory headache: A retrospective chart review

Effectiveness of Lidocaine Infusion Versus Valproate Infusion for Pediatric Status Migrainosus

OBJECTIVE

To compare the efficacy (as measured by time to resolution of pain) and safety of valproate infusion and lidocaine infusion in the treatment of pediatric status migrainosus.

METHODS

We conducted a single-center retrospective cohort study from March 2014 to June 2021 evaluating children and adolescents who received a lidocaine or sodium valproate infusion for the treatment of status migrainosus. During the study period, lidocaine infusion was exclusively used before March 2016, whereas sodium valproate infusion was exclusively used afterward.

RESULTS

A total of 31 patients received lidocaine and 63 received sodium valproate infusion. Patients in the lidocaine group achieved significantly faster control of pain with median hours to pain free of 11.7 (interquartile range, 3.8-32.3) hours compared with 43.4 (interquartile range 13.8-68.7) hours in the valproate group (P = .002). At discharge, 21 of 31 (67.7%) of patients receiving lidocaine were pain-free compared with 26 of 59 (44.1%) of patients receiving valproate (P = .03). There were significantly more infusion interruptions of valproate compared with lidocaine for various patient-related factors (16/63, 25.4% vs 1/31, 3.2%; P = .009). More adverse effects were observed with valproate (42/63, 67%) compared with lidocaine (1/31, 3.2%; P < .001). The significant difference in hours to pain control persisted after adjustment for sex, race, age, BMI, presence of comorbidities, and pain score at admission. All patients in both groups completed the infusions and were discharged from the hospital.

CONCLUSIONS

Intravenous lidocaine infusion is associated with superior pain control and a better safety profile compared with intravenous sodium valproate infusion in status migrainosus.

New Daily Persistent Headache in the Pediatric and Adolescent Population: An Updated Review

PURPOSE OF REVIEW

New daily persistent headache (NDPH) is a primary headache disorder characterized by the sudden onset of continuous pain and its intractability to treatment. It is more prevalent in the pediatric population than the adult population, but remains understudied and underdiagnosed. The purpose of the current article is to provide a current overview of new daily persistent headache in the pediatric and adolescent population, including history, pathophysiology, clinical findings, current and emerging treatment options, and the results of recent studies and meta-analyses.

RECENT FINDINGS

Despite recent studies and meta-analyses showing significant phenotypic overlap between chronic migraine and NDPH in the pediatric population, multiple recent studies have come to conflicting conclusions about the overlap of medication overuse in headache and pediatric NDPH. Recent studies reveal alterations in neuroimaging, particularly in functional connectivity, in patients with NDPH. Patients frequently remain treatment-refractory even to medications that have historically proven helpful in this population; however, new treatment options, including calcitonin gene-related peptide (CGRP) monoclonal antibodies, may be more effective.

SUMMARY

NPDH remains a perplexing and difficult-to-manage condition for both children and adults. Despite a higher prevalence in the pediatric population, there are relatively few studies to guide the evaluation and treatment of NDPH in pediatric and adolescent patients. Early treatment, both pharmacological and non-pharmacological, should be employed to reduce disability. Overall, further studies are needed to better understand pathogenesis and to identify more effective therapeutic strategies, both pharmacological and non-pharmacological.

Peripheral Nerve Blocks: A Tool for Inpatient Pediatric Status Migrainosus

BACKGROUND

To assess the efficacy and safety of peripheral nerve blocks in the inpatient settings for pediatric patients presenting with status migrainosus.

METHODS

An analysis of a retrospective cohort of patients aged 13 to 18 years, admitted for status migrainosus from 2017 to 2022, was performed. Among the 1805 patients who presented with status migrainosus, 265 required hospital admission. A total of 177 patients failed the first- and second-line intravenous therapy and were treated with either peripheral nerve block (PNB) or dihydroergotamine (DHE) intravenous infusions. The primary outcome of the study was pain score level reduction by 50%, and the secondary outcome was duration of hospital stay. Visual analog scale score was used for pain assessment.

RESULTS

Among the 177 patients, 100 patients were treated with DHE and 77 were treated with PNB. Target pain control was achieved in 59 of 100 patients receiving DHE and 38 of 77 patients receiving PNB. The average hospital stay of patients who responded to PNB was significantly lower compared with that of patients receiving DHE (3.6 days vs 4.9 days). Among the 41 patients who were refractory to DHE, 30 patients received PNB, of which 12 responded to nerve blocks. The most common side effects for PNBs were pain at injection site in 39% of patients and nausea/vomiting for DHE in 50% of patients.

CONCLUSIONS

PNB can be safely administered in the hospital setting to pediatric patients with status migrainosus. PNB treatment helped achieve target pain control with minimal side effects and reduced the hospital stay duration.