Part II--Management of pediatric post-traumatic headaches

Inflammation, brain connectivity, and neuromodulation in post-traumatic headache

Post-traumatic headache (PTH) is a debilitating condition that affects individuals with different levels of traumatic brain injury (TBI) severity. The difficulties in developing an effective treatment are related to a lack of understanding the complicated mechanisms and neurobiological changes in brain function after a brain injury. Preclinical studies have indicated that peripheral and central sensitization of the trigeminal nociceptive pathways contributes to PTH. While recent brain imaging studies have uncovered widespread changes in brain functional connectivity following trauma, understanding exactly how these networks contribute to PTH after injury remains unknown. Stimulation of peripheral (trigeminal or vagus) nerves show promising efficacies in PTH experimental animals, likely mediated by influencing TBI-induced pathological plasticity by decreasing neuroinflammation and neuronal apoptosis. Non-invasive brain stimulations, such as transcranial magnetic or direct current stimulations, show analgesia for multiple chronic pain conditions, including PTH. Better mechanistic understanding of analgesia achieved by neuromodulations can define peripheral and central mechanisms involved in the development, the resolution, and the management of PTH.

Efficacy of outpatient infusion therapy in pediatric patients with postconcussive headaches

PURPOSE

To determine the relative efficacy of intravenous therapy for postconcussive headaches in a pediatric population, as compared to oral therapy.

METHODS

Pediatric patients treated for postconcussive headaches at an outpatient infusion clinic from 2016 to 2018 were selected for inclusion in the study. Of the 95 patients who were treated in clinic, 53 patients were selected for a retrospective chart review. Clinic visits before and after infusions were reviewed to determine changes in headache score (HA), symptom severity score (SSS), and self-reported symptom relief. An age-matched and SSS-matched group served as a control. The control group received only oral therapy for their headaches. The infusion consisted of parenteral ketorolac, compazine, diphenhydramine, and a normal saline bolus (20 mg/kg).

RESULTS

Following infusion therapy, overall mean HA and SSS scores were both reduced (p < 0.0001). Oral therapy demonstrated a similar mean overall reduction in HA and SS scores (p < 0.0001). While both groups achieved a reduction in HA and SS scores, there was not a statistically significant difference in reduction of symptoms scores between the oral and infusion groups.

CONCLUSION

Infusion therapy is as effective at reducing HA and SSS as established oral therapies. Infusion therapy may have a shorter time to headache abortion than oral therapy based on pharmacokinetics. Further, some physicians are unwilling to allow an athlete to return to play while taking suppressive medication. Future studies may show that an infusion could allow a more rapid return to play and resolution of symptoms.

Acute and chronic management of posttraumatic headache in children: A systematic review

OBJECTIVES

The goal of this paper is to provide a compilation of the evidence for the treatment of posttraumatic headache (PTH) in the pediatric population. Headache features and timing of therapy were considered.

BACKGROUND

Headache is the most common symptom following mild traumatic brain injury (mTBI), affecting more than 80% of children and adolescents. It is unclear whether treatment for PTH should be tailored based on headache characteristics, particularly the presence of migraine features, and/or chronicity of the headache.

METHODS

Systematic literature searches of PubMed, Embase, Scopus, and Cochrane databases (1985-2021, limited to English) were performed, and key characteristics of included studies were entered into RedCAP^® (Prospero ID CRD42020198703). Articles and conference abstracts that described randomized controlled trials (RCTs), cohort studies, retrospective analyses, and case series were included. Participants included youth under 18 years of age with acute (<3 months) and persistent (≥3 months) PTH. Studies that commented on headache improvement in response to therapy were included.

RESULTS

Twenty-seven unique studies met criteria for inclusion describing abortive pharmacologic therapies (9), preventative pharmacotherapies (5), neuromodulation (1), procedures (5), physical therapy and exercise (6), and behavioral therapy (2). Five RCTs were identified. Studies that focused on abortive pharmacotherapies were completed in the first 2 weeks post-mTBI, whereas other treatment modalities focused on outcomes 1 month to over 1-year post-injury. Few studies reported on migrainous features (7), personal history of migraine (7), or family history of migraine (3).

CONCLUSIONS

There is limited evidence on the timing and types of therapies that are effective for treating PTH in the pediatric population. Prospective studies that account for headache characteristics and thoughtfully address the timing of therapies and outcome measurement are needed.

Management of Pediatric Post-Concussion Headaches: National Survey of Abortive Therapies Used in the Emergency Department

Children frequently present to an Emergency Department (ED) after concussion, and headache is the most commonly associated symptom. Recent guidelines emphasize the importance of analgesia for post-concussion headache (PCH), yet evidence to inform treatment is lacking. We sought to characterize abortive therapies used to manage refractory PCH in the pediatric ED and factors associated with treatment. A scenario-based survey was distributed to ED physicians at all 15 Canadian tertiary pediatric centers. Participants were asked questions regarding ED treatment of acute (48 h) and persistent (1 month) PCH refractory to appropriate doses of acetaminophen/ibuprofen. Logistic regression was used to assess factors associated with treatment. Response rate was 63% (137/219). Nearly all physicians (128/137, 93%) endorsed treatment in the ED for acute PCH of severe intensity, with most selecting intravenous treatments (116/137, 84.7%). Treatments were similar for acute and persistent PCH. The most common treatments were metoclopramide (72%), physiologic saline (47%), and nonsteroidal anti-inflammatory agents (NSAIDS; 35%). Second-line ED treatments were more variable. For acute PCH of moderate intensity, overall treatment was lower (102/137, 74%; p < 0.0001), and NSAIDS (48%) were most frequently selected. In multi-variable regression analyses, no physician- or ED-level factor was associated with receiving treatment, or treatment using metoclopramide specifically. Treatment for refractory PCH in the pediatric ED is highly variable. Importantly, patients with severe PCH are most likely to receive intravenous therapies, often with metoclopramide, despite a paucity of evidence supporting these choices. Further research is urgently needed to establish the comparative effectiveness of pharmacotherapeutic treatments for children with refractory PCH.

Persistent post-traumatic headache: a migrainous loop or not? The clinical evidence

BACKGROUND

Headache is a common complication of traumatic brain injury. The International Headache Society defines post-traumatic headache as a secondary headache attributed to trauma or injury to the head that develops within seven days following trauma. Acute post-traumatic headache resolves after 3 months, but persistent post-traumatic headache usually lasts much longer and accounts for 4% of all secondary headache disorders.

MAIN BODY

The clinical features of post-traumatic headache after traumatic brain injury resemble various types of primary headaches and the most frequent are migraine-like or tension-type-like phenotypes. The neuroimaging studies that have compared persistent post-traumatic headache and migraine found different structural and functional brain changes, although migraine and post-traumatic headache may be clinically similar. Therapy of various clinical phenotypes of post-traumatic headache almost entirely mirrors the therapy of the corresponding primary headache and are currently based on expert opinion rather than scientific evidence. Pharmacologic therapies include both abortive and prophylactic agents with prophylaxis targeting comorbidities, especially impaired sleep and post-traumatic disorder. There are also effective options for non-pharmacologic therapy of post-traumatic headache, including cognitive-behavioral approaches, onabotulinum toxin injections, life-style considerations, etc. CONCLUSION: Notwithstanding some phenotypic similarities, persistent post-traumatic headache after traumatic brain injury, is considered a separate phenomenon from migraine but available data is inconclusive. High-quality studies are further required to investigate the pathophysiological mechanisms of this secondary headache, in order to identify new targets for treatment and to prevent disability.

Post-traumatic Headache After Pediatric Traumatic Brain Injury: Prevalence, Risk Factors, and Association With Neurocognitive Outcomes

Post-traumatic headache is common after pediatric traumatic brain injury and affects thousands of children every year, but little is known about how headache affects recovery after traumatic brain injury in other symptom domains. We aimed to determine the association between headache and other common symptoms after pediatric traumatic brain injury and explore whether subjective complaints of headache are associated with objective deficits on specialized neurocognitive testing. We conducted a retrospective cohort study of children ages 3-19 years following traumatic brain injury with a completed Sports Concussion Assessment Tool (SCAT) questionnaire. Post-traumatic headache was defined by a score more than 2 on the SCAT question for headache and define headache groups for comparison. In our cohort, we analyzed data from the Delis-Kaplan Executive Function System and the Wechsler Abbreviated Scale of Intelligence, Second Edition (WASI-II). Headache was reported in 40 (33%) patients presenting for post-traumatic brain injury care among 121 pediatric traumatic brain injury patients and did not differ by injury severity. Median total SCAT symptom score in the headache group was 5-fold higher compared to patients without headache (median 45.5 vs 9; P < .001). Significantly lower-scaled scores in color naming, matrix reasoning, letter sequencing, and letter switching were also found in the headache group (all P ≤ .03). Our study shows that headache, as reported by patients on the SCAT, is associated with higher symptom scores in all other symptom domains, including sleep, mood, sensory, and cognitive. Headache was also associated with worse objective neurocognitive measures and may identify patients who could benefit from specialized follow-up care and management.

Postintensive Care Syndrome in Pediatric Critical Care Survivors: Therapeutic Options to Improve Outcomes After Acquired Brain Injury

PURPOSE OF REVIEW

Children surviving the pediatric intensive care unit (PICU) with neurologic illness or injury have long-term morbidities in physical, cognitive, emotional, and social functioning termed postintensive care syndrome (PICS). In this article, we review acute and longitudinal management strategies available to combat PICS in children with acquired brain injury.

RECENT FINDINGS

Few intervention studies in this vulnerable population target PICS morbidities. Small studies show promise for both inpatient- and outpatient-initiated therapies, mainly focusing on a single domain of PICS and evaluating heterogeneous populations. While evaluating the effects of interventions on longitudinal PICS outcomes is in its infancy, longitudinal clinical programs targeting PICS are increasing. A multidisciplinary team with inpatient and outpatient presence is necessary to deliver the holistic integrated care required to address all domains of PICS in patients and families. While PICS is increasingly recognized as a chronic problem in PICU survivors with acquired brain injury, few interventions have targeted PICS morbidities. Research is needed to improve physical, cognitive, emotional, and social outcomes in survivors and their families.

Collaborative care model for treatment of persistent symptoms after concussion among youth (CARE4PCS-II): Study protocol for a randomized, controlled trial

Background

Currently, there is limited evidence to guide intervention and service delivery coordination for youth who suffer a concussion and subsequently experience persistent post-concussive symptoms (PCS) (Lumba-Brown et al. JAMA Pediatr 172(11):e182853, 2018; Lumba-Brown A et al. JAMA Pediatr 172(11):e182847, 2018). We have developed a collaborative care intervention with embedded cognitive-behavioral therapy, care management, and stepped-up psychotropic medication consultation to address persistent PCS and related psychological comorbidities. The CARE4PCS-II study was designed to assess whether adolescents with persistent symptoms after sports-related concussion will demonstrate better outcomes when receiving this collaborative care intervention compared to a usual care (control) condition.

Methods/design

This investigation is a randomized comparative effectiveness trial to receive intervention (collaborative care) or control (usual care). Two hundred sports-injured male and female adolescents aged 11–18 years with three or more post-concussive symptoms that persist for at least 1 month but less than 9 months after injury will be recruited and randomized into the study. The trial focuses on the effects of the intervention on post-concussive, depressive, and anxiety symptoms measured 3, 6, and 12 months after baseline.

Discussion

The CARE4PCS II study is a large comparative effectiveness trial targeting symptomatic improvements in sports injured adolescents after concussion. The study is unique in its adaptation of the collaborative care model to a broad spectrum of primary care, sports medicine, and school settings. The investigation incorporates novel elements such as the delivery of CBT through HIPAA complaint video conferenceing technology and has excellent widespread dissemination potential should effectiveness be demonstrated.

Trial registration

ClinicalTrials.gov, NCT03034720. Registered on January 27, 2017.

Electronic supplementary material

The online version of this article (10.1186/s13063-019-3662-3) contains supplementary material, which is available to authorized users.

Low Usage of Analgesics for Pediatric Concussion-Related Pain in US Emergency Departments Between 2007 and 2015

OBJECTIVE

To estimate the proportion of pediatric patients with a concussion who received analgesia when presenting with pain to US emergency departments, and to describe the analgesics used.

STUDY DESIGN

This was a repeated cross-sectional analysis study using the National Hospital Ambulatory Medical Care Survey database of nationally representative emergency department visits from 2007 to 2015. We included children under 18 years old with isolated concussions. Survey weighting procedures were applied to generate population-level estimates and to perform multivariable logistic regression to identify factors associated with analgesic administration.

RESULTS

There were an estimated 1.54 million isolated concussion visits during the 9-year study period. Pain at presentation was reported frequently (78%), with the majority rated as moderate (36%) or severe (27%). Among all children reporting pain, 42% received no analgesics, including 40% with moderate-to-severe pain intensity. Multivariable analysis found younger age, male sex, and treatment in a nonacademic hospital were all negatively associated with analgesic administration. The medications most frequently administered were acetaminophen (54%), nonsteroidal anti-inflammatories (44%), and opioids (13%).

CONCLUSIONS

Analgesic medications seem to be underused in the treatment of pediatric concussion-related pain. Following acetaminophen and nonsteroidal anti-inflammatories, opioids, which are not recommended for this condition, were the most frequently prescribed analgesics. Further research should establish optimal, consistent, and responsible pain management strategies for pediatric concussions.

Concussion part II: Rehabilitation - The need for a multifaceted approach

INTRODUCTION

While most individuals recover in the initial days to weeks following a concussion, in up to 30% of cases symptoms and functional limitations may persist beyond the initial four weeks. There is emerging evidence that multifaceted physiotherapy techniques for individuals who have ongoing symptoms following concussion may be of benefit.

PURPOSE

The purpose of this masterclass article is to summarize the evidence for rehabilitation, describe treatment techniques and multifaceted interventions following concussion.

IMPLICATIONS

Concussion is a heterogenous injury and multiple types of rehabilitation may be required to address ongoing alterations in function. A greater understanding of evidence based rehabilitative techniques will enable the clinician to direct treatment and facilitate recovery for individuals who have ongoing symptoms following concussion.

The Rise of the Concussion Clinic for Diagnosis of Pediatric Mild Traumatic Brain Injury

It was not too long ago that being struck violently in the head or "getting your bell rung" was often brushed off as nothing to worry about. These days the pendulum has swung and there is growing appreciation that this mild traumatic brain injury (mTBI), often called concussion, must be taken seriously and is now on the forefront of public health concerns. As a growing body of research continues to expand our understanding of concussion, the paradigm of diagnosis and treatment is transforming rapidly. The recent rise of specialty concussion clinics across the country has grown out of a need for safe, effective, and efficient evaluation of these injuries by healthcare professionals qualified to implement diagnostic and management strategies that align with the latest evidence-based practice guidelines. Due to the complex nature of each injury, a comprehensive multidisciplinary team can provide a valuable individualized approach to concussion care.

Treatment of Pediatric Concussion

Concussions have gained attention in medical literature, legal literature, and lay media over the past several years as a public health affecting children, particularly those who do not improve in the first few days after an injury. We discuss strategies for acute management immediately after a concussion and an introduction to medical and non-medical options for treatment of the complex symptoms that persist in some patients with concussions. We examine the role of rest and exercise during recovery. We briefly discuss the role of the multidisciplinary approach to concussion in a setting that engages multiple specialists. Finally, we address policy changes related to sport-concussions and their efficacy in improving long term outcomes.

Pediatric Traumatic Brain Injury and Associated Topics: An Overview of Abusive Head Trauma, Nonaccidental Trauma, and Sports Concussions

Pediatric traumatic brain injury (TBI) uniquely affects the pediatric population. Abusive head trauma (AHT) is a subset of severe pediatric TBI usually affecting children in the first year of life. AHT is a form of nonaccidental trauma. Sports-related TBI resulting in concussion is a milder form of TBI affecting older children. Current recommended perioperative management of AHT and sports concussions relies on general pediatric TBI guidelines. Research into more specific pediatric TBI screening and management goals is ongoing. This article reviews the epidemiology, mechanisms, clinical signs, and management of AHT and sports-related concussions.

The Clinical Implications of Youth Sports Concussion Laws: A Review

The recent passage of state youth sports concussion laws across the country introduces clinical implications for health care professionals caring for student-athletes. Although the laws were established to provide protections for student-athletes and prevent adverse outcomes, efforts aimed at implementation have uncovered various challenges in concussion diagnosis and management. Some of the most salient issues include medical evaluation, return to play, and return to learn. For this reason, health care professionals play a pivotal role in determining the critical next steps after a student is removed from play with a suspected concussion. Also, state laws may influence an influx of concussion patients to health care facilities and, thereby, present various unforeseen challenges that can be mitigated with adequate clinical preparation. This is key to helping student-athletes recover and resume regular activities in sports, recreation, and education. This review describes the various components of state youth sports concussion laws relevant to clinical practice and nuances that health care professionals should appreciate in this context. Additionally, concussion tools and strategies that can be used in clinical practice are discussed.

Pharmacotherapy for Persistent Posttraumatic Headaches in Children and Adolescents: A Brief Review of the Literature

Concussion, now most often referred to as mild traumatic brain injury in recent literature, is common in pediatrics, and headache is often the most common complaint post-injury. Although most children and adolescents recover within 1-2 weeks, some develop frequent and debilitating headaches that can last for months or longer. Most clinicians would agree on the importance of managing both acute and persistent posttraumatic headaches appropriately to speed recovery, minimize disability, maximize function, and improve quality of life, but there are no well-established guidelines to instruct physicians in doing so. As this continues to be a developing field, there is much we still need to learn about concussion and the appropriate strategies to prevent and treat these injuries and their sequelae. This review is intended to help providers understand the current evidence, and sometimes the lack thereof, and ultimately to lead to improved care for children with headaches after mild traumatic brain injury.

Concussion Symptom Prevalence, Severity and Trajectory: Implications for Nursing Practice

PURPOSE

The purpose of this study was to describe the symptom severity and trajectory in concussed children who were followed during a one year period at a concussion clinic.

DESIGN AND METHODS

A retrospective chart review was completed to describe the symptom trajectory up to three months during the recovery.

RESULTS

One hundred and thirty-six patients were included (74 female, 62 male) with a median age of 15.4years (range 13-17). The most common mechanisms of injury included: falls (19.9%), hockey injuries (15.4%), soccer (14.0%) and football injuries (6.6%). Most concussion symptoms decreased in severity or improved over time. Four symptoms including fatigue/low energy, drowsiness, concentration difficulties and irritability had the highest symptoms scores at both 28 and 84days post-injury in patients with persistent symptoms. Emotionality and nervousness/anxiousness and nausea/vomiting scores were seen to increase over time in patients with persistent symptoms.

IMPLICATIONS

Clinical use of standardized assessment tools can help caregivers track and monitor concussion symptoms over time. Appropriate management strategies need to be devised for symptoms that are prevalent or increasing over time.

Posttraumatic Headache

After sustaining a concussion or mild traumatic brain injury, headaches are one of the most common complaints. The pathophysiologic changes that occur in the setting of injury likely contribute to or cause posttraumatic headaches. Posttraumatic headaches often present as migraine or tension-type headaches. Unlike pain from other types of injuries, headaches following mild traumatic brain injury are more likely to persist. Preexisting conditions such as migraine and mood disorders may influence posttraumatic headache and complicate management. Patients are at high risk to overuse abortive medications and develop medication overuse headache. Headache hygiene and early education are essential for effective management. Abortive medications include nonsteroidal anti-inflammatory drugs and triptans. Preventive medications include tricyclic antidepressants and antiepileptics. Patients who fail outpatient therapies may benefit from referral for intravenous medications in the emergency department. Patients with persistent posttraumatic headache may benefit from multimodal treatments including physical rehabilitation and pain-focused cognitive-behavioral therapies. [Pediatr Ann. 2018;47(2):e61-e68.].

Office-based concussion evaluation, diagnosis, and management: pediatric

More children and adolescents are participating in competitive sports than ever before, causing an overall increase in sport-related injuries. Concussion is a common injury in the pediatric population and its prevalence has increased with increased visibility and awareness. This chapter will discuss the clinical presentation, evaluation, and management of concussions sustained by pediatric athletes, while addressing the distinctive factors that pertain to this population. Management of concussion should be tailored to patients' symptoms and should focus on an early and gradual return to both cognitive and noncontact low-risk physical activity. A multidisciplinary approach is often helpful in addressing more specific symptoms, which fall into the somatic, cognitive, vestibular, emotional, and sleep domains. A prolonged recovery is defined by symptoms lasting more than 4 weeks. Individualized return-to-play decisions should focus on the safety of the young athlete.

Interventional Treatment for Post-traumatic Headache

Post-traumatic headache (migraine) is the most common symptom of concussion and traumatic brain injury. An expert opinion-based review along with a literature review (PubMed) was conducted looking at known interventional procedures for post-traumatic headache using the keywords post-traumatic headache, post-traumatic migraine headache, concussion, mild traumatic brain injury, and traumatic brain injury and the following categories: mechanism, pathophysiology, treatment, physical therapy, neurostimulation, Botox@/Onabotulinum toxin, and surgical intervention. The results returned a total of 181 articles of which 52 were selected. None of the articles included randomized placebo-controlled studies, and most were either prospective or retrospective case analysis and/or review articles or consensus opinion papers, with most studies yielding positive results. Despite a lack of hard evidence, interventional procedures, alone or in combination, appear to be an effective treatment for post-traumatic headaches.

Stability of gabapentin in extemporaneously compounded oral suspensions

This study reports the stability of extemporaneously prepared gabapentin oral suspensions prepared at 100 mg/mL from bulk drug and capsules in either Oral Mix or Oral Mix SF suspending vehicles. Suspensions were packaged in amber plastic bottles and amber plastic syringes at 25°C / 60%RH for up to 90 days. Throughout the study period, the following tests were performed to evaluate the stability of the preparations: organoleptic inspection to detect homogeneity, color or odor changes; pH measurements; and gabapentin assay using a stability-indicating HPLC-UV method. As crystallization was observed at 5°C, storage at this temperature condition is not recommended. All preparations stored at 25°C / 60%RH remained stable for the whole study duration of 90 days.

Pediatric Posttraumatic Headache

Concussion and mild traumatic brain injury are common injuries in pediatrics, and posttraumatic headache is the most common complaint following them. Although most children and teens recover from a simple, isolated concussion without incidents within 1-2 weeks, some develop symptoms that can last for months. It is important to manage both acute and persistent posttraumatic headaches appropriately to speed recovery, minimize disability, and maximize function. In this article, we review the definitions, epidemiology, and current recommendations for the evaluation and treatment of acute and persistent posttraumatic headaches. Although this is still a developing field and there is much that we still need to learn about concussion and the best strategies to prevent and treat these injuries and their sequelae, we hope that this review will help providers to understand the current evidence and treatment recommendations to improve care for children with concussion and mild traumatic brain injury.

The Diagnosis and Management of Concussion in Children and Adolescents

BACKGROUND

Concussion is a complex brain injury that results in more than 100,000 emergency department visits for school-aged children each year in the United States. All 50 US states have passed concussion legislation designed to promote safety in youth sports. Most of these laws require medical clearance by a licensed health care provider before returning to sport, which may have contributed to an increase in pediatric subspecialty referrals, particularly referrals to the child neurologist.

METHODS

We reviewed the literature on pediatric concussion.

RESULTS

This review summarizes the current knowledge and recommendations for concussion diagnosis and management in children and adolescents, athletes and nonathletes. It highlights concussion epidemiology, pathophysiology, advances in neuroimaging, and potential health risks including second impact syndrome and chronic traumatic encephalopathy. It also underscores clinical areas where evidence is lacking.

CONCLUSIONS

The diagnosis and management of concussion requires specific considerations in children. Further concussion research must be done to minimize injury risk and to optimize medical care for this common problem.