Anxiety sensitivity and fear of pain in paediatric headache patients

Infancy predictors of functional somatic symptoms in pre- and late adolescence: a longitudinal cohort study

Physiological regulatory problems in infancy (i.e., problems with sleeping, feeding, and tactile reactivity) have been associated with impairing functional somatic symptoms (FSS) at ages 5-7. We aimed to extend this finding by examining not only the association of physiological regulatory problems but also other infancy factors (i.e., emotion dysregulation and contact problems) with FSS in pre- and late adolescence. Standardized behavioral assessments and self-report questionnaire data from assessment waves at 0-1, 11-12, and 16-17 years of the population-based Copenhagen Child Cohort (CCC2000) were linked with Danish register data on maternal postpartum psychiatric illness and family adversity as covariates. Multiple linear regression analyses were performed to examine the association between infancy factors and FSS in pre- and late adolescence. Only infancy physiological regulatory problems significantly predicted preadolescent FSS (b = 0.38, 95% CI [0.14, 0.62]), also when accounting for maternal postpartum psychiatric illness and family adversity. The association was attenuated for late adolescent FSS.

CONCLUSION

Infancy physiological regulatory problems may represent early signs of a dysregulated stress system and were found to significantly predict FSS in pre- but not late adolescence. Implications for early FSS prevention could include testing interventions promoting infants' regulation of sleep, feeding, and tactile reactivity.

WHAT IS KNOWN

• Functional somatic symptoms (FSS) are common in adolescence. • Explanatory models of FSS emphasize a multifactorial etiology involving interactions between early child-related vulnerabilities and contextual factors. • Infancy physiological regulatory problems (i.e., problems in the area of sleeping, feeding, and tactile reactivity) might represent early signs of a dysregulated stress system, and have been shown to predict impairing FSS in preschool childhood.

WHAT IS NEW

• This study investigated the association between infancy factors, namely physiological regulatory problems with feeding, sleeping, and/or tactile reactivity, emotion dysregulation, and contact problems, and FSS in pre- and late adolescence. • Only a combination of infancy physiological regulatory problems significantly predicted preadolescent FSS, with the association attenuating for FSS in late adolescence. • Implications for early FSS prevention could include parent-mediated interventions aiming to promote infants' physiological regulatory skills.

A matter of balance. Positioning of parents' selves through negotiations of symptoms' meaning at a pain clinic for children/young people

This paper traces how the meaning of symptoms and the positioning of selves are entangled and discursively constructed in therapeutic conversations between parents and therapists at a pain clinic for children and young people (age 8 to 18) with recurrent or chronic pain or other somatic symptoms with no established biophysical pathology. Based on data material from an ethnographic fieldwork it is examined how the selves of respectively children/young people and their parents are discursively positioned in conversational encounters and the role positioning of selves play in the context of establishing and negotiating the symptoms' meaning. The bearer of medically unexplained symptoms is oftentimes subjected to moral assessments. In this paper it will be shown that parents, in the institutional setting of the pain clinic, enter the negotiation of moral assessments assigned to their children, and that these moral assessments not only concern the sufferers' selves but also the selves of the parents. The overall argument is that dialogues between parents and therapists concerning the meaning and source of their children's symptoms are simultaneously negotiations in which not only the sufferers'  but also their parents' moral positions are at stake.

Are We Any Closer to Understanding How Chronic Pain Develops? A Systematic Search and Critical Narrative Review of Existing Chronic Pain Vulnerability Models

Identifying biopsychosocial factors underlying chronic pain vulnerability is essential for the design of preventative efforts. Multiple chronic pain vulnerability models exist, however, there is a lack of comprehensive evaluation of these models in the literature, potentially due to the lack of guidelines that specify the criteria by which these types of work should be assessed. In this work, we created evaluation criteria (based on the general goals of conceptual models), and we then used them to critically review the chronic pain vulnerability models available in the current peer-reviewed literature (identified through a systematic search). Particularly, we evaluated the models on the basis of conceptual clarity/specificity of measures, depth of description of aetiological and mechanistic factors, use of a whole system approach, and quality of the evidence associated with the models. We found nine conceptual models that have been explored in detail (eg, fear avoidance model, diathesis-stress model). These models excel at clarity and are supported mostly by self-report evidence of a psychological nature (anxiety sensitivity, pain catastrophizing, etc.), but provide little explanation of mechanistic and aetiological factors. In the future, models could be improved by complementing them with proposals from other models and exploring potential causal factors and mechanisms maintaining the condition. This task could be carried out through prospective cohort studies, and computational approaches, amongst others.

A longitudinal examination of the interpersonal fear avoidance model of pain: the role of intolerance of uncertainty

Youth with chronic pain and their parents face uncertainty regarding their diagnosis, treatment, and prognosis. Given the uncertain nature of chronic pain and high comorbidity of anxiety among youth, intolerance of uncertainty (IU) may be critical to the experience of pediatric chronic pain. This study longitudinally examined major tenets of the Interpersonal Fear Avoidance Model of Pain and included parent and youth IU as key factors in the model. Participants included 152 youth with chronic pain (Mage = 14.23 years; 72% female) and their parents (93% female). At baseline, parents and youth reported on their IU and catastrophic thinking about youth pain; youth reported on their fear of pain, pain intensity, and pain interference; and parents reported on their protective responses to child pain. Youth reported on their pain interference 3 months later. Cross-lagged panel models, controlling for baseline pain interference, showed that greater parent IU predicted greater parent pain catastrophizing, which, in turn, predicted greater parent protectiveness, greater youth fear of pain, and subsequently greater youth 3-month pain interference. Youth IU had a significant indirect effect on 3-month pain interference through youth pain catastrophizing and fear of pain. The results suggest that parent and youth IU contribute to increases in youth pain interference over time through increased pain catastrophizing, parent protectiveness, and youth fear of pain. Thus, parent and youth IU play important roles as risk factors in the maintenance of pediatric chronic pain over time and may be important targets for intervention.

Comparison of Children with Migraine and Those with Tension-Type Headache for Psychiatric Symptoms and Quality of Life

This study compared the severity of depression, anxiety, somatization, anxiety sensitivity, sleep disturbances, and quality of life (QoL) among children with migraine, children with tension-type headache (TTH), and healthy children. A total of 37 children with migraine, 22 with TTH, and a healthy control group (n = 35) participated in this study. Children with migraine exhibited higher depression and somatization and lower QoL scores than those in the control group. General sleep disturbances, bedtime resistance, sleep onset delay, sleep duration, sleep anxiety, night wakings, sleep-disordered breathing, and daytime sleepiness scores were also higher in those in the migraine group than in the control group. Regression models indicated that the severity of headache and depression scores significantly affected the QoLs of children with headache disorder as a whole. Migraine is associated with depression, somatization, sleep disturbances, and poor QoL, whereas TTH is associated with only sleep disturbances in childhood. The impact of headache on the QoL occurs mainly through the headache-specific and psychiatric factors.

The Co-occurrence of Pediatric Chronic Pain and Anxiety: A Theoretical Review of a Developmentally Informed Shared Vulnerability Model

The development and maintenance of pediatric chronic pain and anxiety are complex, underscoring the need to better understand the interactive forces contributing to their co-occurrence. The shared vulnerability model (SVM) was developed to explain the co-occurrence of chronic pain and posttraumatic stress disorder in adults. Although many core tenets have been well supported by pediatric research, the SVM has yet to be extended to pediatric pain populations. We propose a developmentally informed pediatric SVM for advancing our understanding of the co-occurrence of pediatric chronic pain and anxiety disorders. The proposed SVM postulates that youth at increased risk for the development of chronic pain and/or anxiety share predisposing vulnerabilities, including anxiety sensitivity, and that these shared vulnerabilities give rise to negative emotional responses (child and parent) in the context of stressful events. Consequences of fear and anxiety, including avoidance behavior, further contribute to the development of chronic pain, anxiety, and their co-occurrence. The parental, school, and peer contexts in which these problems develop and are maintained in youth are pertinent to integrate into a SVM, as pediatric chronic pain and anxiety disorders share several social-contextual risk and maintenance factors. We also highlight new areas of inquiry.

Functional Somatic Syndromes (FSS) in Children and Adolescents

Abstract. Unspecific somatic health complaints and symptoms are common in children and adolescents, varying on a continuum of severity. When persistent and impairing, they are often referred to as functional somatic syndromes (FSS). The overarching objective of this paper is to provide an overview of the pediatric literature in relation to conceptual, assessment, and treatment issues for youth presenting with FSS. Clinical recommendations are outlined including addressing potential feasibility and barrier issues for families presenting to medical and mental health services. Assessment and treatment issues are further discussed in context of two recent psychotherapy trials conducted with children and older age adolescents (aged from 7 to 19 years). Finally, we address ongoing research gaps in this field with view to strengthen the evidence base in the assessment and treatment of youth presenting with FSS.

Making Sense of "Somatization": A Systematic Review of its Relationship to Pediatric Pain

OBJECTIVES

Pain and other physical symptoms commonly co-occur in childhood. There is debate about the relevance of somatization in understanding pain. The present review critically appraised and synthesized the extant literature on the relationship between pediatric pain and somatization.

METHODS

A systematic review (PROSPERO registration #95956) was conducted in Medline, PsycINFO, EMBASE, and CINAHL using search terms related to pain and somatization in children and adolescents. A total of 156 articles were eligible for inclusion in the review. For studies that measured somatization using a symptom questionnaire, descriptions of "somatization" were extracted. Data regarding the relationship between pain and somatization were extracted for studies measuring somatization using a diagnostic category (e.g., Somatic Symptom and Related Disorders [SSRDs]).

RESULTS

While many studies using somatic symptom questionnaires described somatization as having a psychological component, this was not always captured in measurement tools. Pain was reported as a common symptom in patients with an SSRD diagnosis, though rates varied depending on the specific diagnosis and pain location. Rates of SSRD diagnoses among pain patients were less frequent than rates of pain amongst SSRD patients.

CONCLUSIONS

SSRDs and pain commonly co-occur, though rates differ depending on diagnosis and pain location. Understanding the relationship between pain and somatization is complicated by the discrepancy between how somatization is defined and measured in questionnaire studies. A comprehensive and measurable definition of somatization is needed so researchers can better identify the shared and unique contributions of pain and somatization in pediatric populations.

[Tension type headaches in children and adolescents: co-morbidity with emotional and behavioral disorders]

AIM

To assess the incidence of emotional and behavioral disorders in children and adolescents with frequent episodic or chronic tension type headaches (TTH).

MATERIAL AND METHODS

One hundred and fifty patients with TTH (75 boys and 75 girls), aged 8-16 years, were included in the study. The severity of emotional and behavioral problems was analyzed in comparison with their healthy peers by means of parents' interviewing with the 'Strengths and Difficulties Questionnaire' (SDQ).

RESULTS

Total difficulties scores measured by SDQ were significantly higher in boys (16.2±0.7) and girls (14.3±0.7) with TTH compared with their peers (7.9±0.4 and 7.7±0.4, respectively, p<0.001). Patients with TTH had significantly more prominent manifestations than their peers (p<0.001) on the four SDQ scales, including Hyperactivity and Inattention, Conduct problems, Emotional symptoms, Peer problems. Clinical examination revealed in many pediatric patients with TTH the following disorders: attention deficit hyperactivity disorder (45.3% boys and 13.3% girls), oppositional defiant disorder (26.7% boys, 18.7% girls), with co-occurrence of both disorders in some patients (17.3% boys, 10.7% girls). Moreover, most patients with TTH had anxiety disorders (68.0% boys, 77.3% girls).

CONCLUSION

Clinical features and duration of TTH may be dependent on the severity of co-morbid emotional and behavioral disorders. This should be taken into account for individualized indication of drug therapy and non-pharmacological treatment approaches in pediatric TTH.

Defence response mobilization in response to provocation or imagery of interoceptive sensations in adolescents with chronic pain: a study protocol

Introduction

Fear of pain seems to be a key factor in the development and maintenance of chronic pain and pain-related disability. Interoceptive fear conditioning is assumed to constitute an important mechanism in the origins and maintenance of fear of pain. If conditioned stimuli such as internal bodily sensations are repeatedly paired with pain (unconditioned stimulus), they in turn elicit a conditioned fear response, including defence mobilization such as startle modulation and changes in heart rate and electrodermal activity. Research into emotional imagery suggests that defensive responses can also be elicited through imagery of fear scripts.

Objectives

We present 2 novel paradigms adapted from research on anxiety disorders, which allow to test, if perceived or imagined sensations locally proximal to the main pain location trigger heightened defence response mobilization in adolescents with chronic headaches and abdominal pain.

Methods

The provocation paradigm includes the anticipation and provocation of locally proximal and locally distal interoceptive sensations through disorder-specific muscle tensing tasks (tightening the neck or the abdominal muscles). The imagery paradigm includes 3 imagery scripts (standard neutral, standard fear, and disorder-specific). Startle probes are presented in both paradigms. Defence response mobilization is assessed using psychophysiological measures (startle response modulation, skin conductance level, and heart rate), as well as self-reported measures of fear.

Perspective

The paradigms will give insight into the defence response of adolescents with chronic pain, when confronted with or imagining interoceptive sensations. Results may inform the improvement of clinical interventions aimed to decrease fear of bodily sensations such as interoceptive exposure or interoceptive imagery exposure.

Do Interoceptive Sensations Provoke Fearful Responses in Adolescents With Chronic Headache or Chronic Abdominal Pain? A Preliminary Experimental Study

Objective

To determine whether fear can be triggered when experiencing interoceptive sensations locally proximal to the primary pain region.  Two groups of adolescents (11-18 years) with chronic headache ( n  = 20) or chronic abdominal pain (CAP; n  = 20) completed three muscle tensing tasks to induce proximal versus distal sensations: (1) "frown" task (proximal for chronic headache; distal for CAP), (2) "tighten stomach" task (proximal for CAP; distal for chronic headache), and (3) safe comparison task (clench fist). Fear and avoidance were assessed via self-report. Adolescents with CAP reported greater fear and avoidance after the proximal compared with the distal task, while adolescents with chronic headache did not. Both groups reported similar levels of fear and avoidance in the frown and safe comparison task.  Results suggest that the perception of proximal interoceptive sensations appears to activate the fear system in adolescents with CAP. Future research is warranted.

Feeling the Pressure to Be Perfect: Effect on Pain-Related Distress and Dysfunction in Youth With Chronic Pain

Despite clinical observation of perfectionistic tendencies among youth with chronic pain and their parents as well as established relationships between perfectionism and functional somatic symptoms in adults and youth, no research in the pediatric pain literature has examined perfectionism. This study explored the role of various types of youth and parent perfectionism on youth and parent pain-related distress and behavior and youth pain-related dysfunction. At admission, 239 parent-child pairs from outpatient and day-treatment rehabilitation settings completed several questionnaires assessing perfectionism, pain-related distress, and pain-related dysfunction. Bivariate correlations indicated that socially prescribed perfectionism in youth and parents was linked to youth pain duration, parent and youth pain-related distress and behavior, and youth somatization. Indirect relations showed that youth socially prescribed perfectionism was the only form of perfectionism directly associated with youth somatization whereas all forms of youth perfectionism were indirectly associated with somatization and functional disability through increases in youth pain-related fear and catastrophizing. Additionally, socially prescribed perfectionism was the only type of parent perfectionism linked to youth pain-related dysfunction (somatization, functional disability) through its association with youth pain-related fear. Findings support clinical observations that parent and youth perfectionism is a psychosocial factor that should be targeted in pediatric chronic pain treatment.

PERSPECTIVE

Perfectionism in youth with chronic pain and their parents was indirectly linked to youth pain-related dysfunction through its effect on youth pain-related catastrophizing and fear. Findings support clinical observations that parent and youth perfectionism is a psychosocial factor that should be targeted in pediatric chronic pain treatment.