Pain Location and Functioning in Persons With Spinal Cord Injury

Multisite pain among United States Veterans with posttraumatic stress disorder: Prevalence, predictors, and associations with symptom clusters

Persistent pain in multiple distinct body sites is associated with poorer functional outcomes above and beyond pain intensity and interference. Veterans, and especially those with posttraumatic stress disorder (PTSD), may be at risk for multisite pain. However, the research to date characterizing this presentation is limited. This secondary analysis examined the prevalence of multisite pain in a cross-sectional sample of Veterans and explored demographic, military service-related, and PTSD symptom cluster variables associated with multisite pain among those with clinically significant PTSD symptoms. Participants were 4303 post-9/11 U.S. Veterans (16.55% female gender, 58.45% White/Caucasian, Mage = 35.52), of whom 1375 (31.95%) had clinically significant PTSD symptoms. Multisite pain was defined as endorsing pain that "bothered [me] a lot" in ≥3 body sites out of 5 on the Patient Healthcare Questionnaire-15. A total of 20.03% of all participants, and 40.00% of those with likely PTSD, reported multisite pain. Female gender (OR = 1.55), older age (OR = 1.70), minority race identification (White/Caucasian racial identity OR = 0.75), history of military sexual trauma (OR = 1.99), and spine, abdomen and joint/muscle injuries (ORs = 1.66-3.68) were associated with higher odds of multisite pain. Adjusting for these potential confounders, higher z-scores on the PTSD arousal/reactivity (OR = 1.58, p <.001) subscale was associated with higher multisite pain odds. In summary, multisite pain was common among Veterans with PTSD, especially those who experienced military sexual trauma or certain physical injuries. Multisite pain and PTSD may be associated due to a shared threat reactivity mechanism. PERSPECTIVE: This study investigates the rates and factors associated with having pain in three or more distinct body sites (multisite pain) among United States Veterans. The study findings highlight the unique importance of specific posttraumatic stress symptoms and experiences associated with multisite pain.

The Need to Say More: A Qualitative Analysis of Added Free Text to Chronic Pain Patient Intake Packages

BACKGROUND

Many outpatient chronic pain clinics administer extensive patient intake questionnaires to understand patients' pain and how it impacts their lives. At our institution's pain clinic, many patients include free text in these predominantly closed-ended questionnaires, but little is known about the content categories included in this free text.

AIM

This study examined free text entries on chronic pain patient intake questionnaires.

METHOD

We analyzed 270 occurrences of free text across 43 patient intake questionnaires of people living with chronic pain using a qualitative content analytic approach.

RESULTS

We identified two overarching thematic categories of free text: (1) what they say (characterizes the topic of the free text); and (2) why they say it (characterizes perceived limitations of the patient intake questionnaire format). We also documented the frequency highlighting how often themes and their associated sub-themes (detailed below) were indicated. Within the What they say category, three main themes emerged: (1) health (34.9%; e.g., pain); (2) health service use (27.9%; e.g., medication); and (3) psychosocial factors (20.9%; e.g., relationships). Within the Why they say it category, four main themes emerged: (1) adding information (86.0%; e.g., elaborates/contextualizes); (2) narrow response options (65.1%; e.g., varies); (3) problems with the question (18.6%; e.g., not applicable); and (4) response error (4.7%; e.g., answers incorrectly/misinterprets question).

CONCLUSIONS

People living with chronic pain appear motivated to add additional, unprompted information to their patient intake questionnaires. The results from this study may inform changes to chronic pain patient intake questionnaires which could facilitate improvements in chronic pain patient-health care provider communication.

Is Chronic Pain Temporal Pattern Associated with Middle-Aged and Older Adults’ Perceptions of their Futures?

A psychological consequence of chronic pain may be an inappropriately limited future time perspective (FTP) for middle-aged and older adults. FTP is defined as one’s perception of time as limited or expansive. Potentially meaningful measures, like pain temporal pattern, are often ignored in the chronic pain literature. The present study uses secondary data to assess the association between pain temporal pattern and FTP, and the moderating effect of pain duration. Among 140 individuals with chronic pain, there was no significant association between pain pattern and FTP. However, both pain-related activity interference and pain duration were associated with FTP where greater interference predicted more limited FTP (b = −0.16, p = .03) and longer pain duration contributed to more expansive FTP (b = 0.001, p = .03). The temporal pattern x pain duration interaction terms were non-significant. We discuss implications, limitations, and future directions of these findings.

Electronic Health Literacy in Individuals with Chronic Pain and Its Association with Psychological Function

Electronic health literacy skills and competences are important for empowering people to have an active role in making appropriate health care decisions. The aims of this cross-sectional study were to (1) examine the frequency of use of the Internet for seeking online information about chronic pain, (2) determine the level of eHealth literacy skills in the study sample, (3) identify the factors most closely associated with higher levels of eHealth literacy, and (4) examine self-efficacy as a potential mediator of the association between eHealth literacy and measures of pain and function in a sample of adults with chronic pain. One-hundred and sixty-one adults with chronic pain completed measures assessing internet use, eHealth literacy, pain interference, anxiety, depression, and pain-related self-efficacy. Results indicated that 70% of the participants are active users of the Internet for seeking information related to their health. The level of eHealth literacy skills was not statistically significantly associated with participants’ age or pain interference but was significantly negatively associated with both anxiety and depression. In addition, the findings showed that self-efficacy fully explained the relationship between eHealth literacy and depression and partially explained the relationship between eHealth literacy and anxiety. Self-efficacy should be considered as a treatment target in eHealth literacy interventions, due to its role in explaining the potential benefits of eHealth literacy.

Evidence-based clinical practice guidelines on the management of pain in older people – a summary report

Objective:

The objective of this study is to develop an update of the evidence-based guidelines for the management of pain in older people.

Design:

Review of evidence since 2010 using a systematic and consensus approach is performed.

Results:

Recognition of the type of pain and routine assessment of pain should inform the use of specific environmental, behavioural and pharmacological interventions. Individualised care plans and analgesic protocols for specific clinical situations, patients and health care settings can be developed from these guidelines.

Conclusion:

Management of pain must be considered as an important component of the health care provided to all people, regardless of their chronological age or severity of illness. By clearly outlining areas where evidence is not available, these guidelines may also stimulate further research. To use the recommended therapeutic approaches, clinicians must be familiar with adverse effects of treatment and the potential for drug interactions.

Beyond pain intensity and catastrophizing: The association between self-enhancing humour style and the adaptation of individuals with chronic pain

BACKGROUND

Many questions regarding the process by which self-enhancing humour style has an effect on chronic pain individuals' adjustment remain unanswered. The aim of the present study was to analyse the association of self-enhancing humour style with adjustment in a sample of individuals with chronic pain, over and above the role of catastrophizing and pain intensity. Adjustment was assessed using measures of depression, pain interference and flourishing. We also examined the indirect association between self-enhancing humour style and adjustment via pain acceptance.

METHODS

The study included 427 patients with heterogeneous chronic pain conditions. The study hypotheses were tested using three multiple linear regression analyses, one for each of the criterion variables.

RESULTS

Consistent with the study hypothesis, both direct and indirect associations were found between self-enhancing humour style and depressive symptoms, pain interference and flourishing via pain acceptance.

CONCLUSIONS

Self-enhancing humour style could potentially help individuals with chronic pain to gain perspective and distance themselves from the situation through the acceptance of pain-related negative emotions.

SIGNIFICANCE

Very few studies have investigated the relationship between humour styles and adjustment in chronic pain samples. The results of the current study support the idea that adaptive dispositional traits, such as patient's self- enhancing humour style, play a role in the adaptation of individuals with chronic pain. Given that the association between self-enhancing humour style and adjustment evidenced an indirect association through pain acceptance, training in the use of humour, as individuals with self-enhancing humour style do, might be a useful addition to ACT treatment.

Sleep disturbance in individuals with physical disabilities and chronic pain: The role of physical, emotional and cognitive factors

BACKGROUND

Sleep problems are common for individuals living with physical disabilities and chronic pain. However, the factors that influence the relationship between pain and sleep problems in these populations remain unknown.

OBJECTIVE

The aim of this study was to increase our understanding of the physical, emotional and cognitive factors associated with sleep disturbance in individuals with chronic health conditions often associated with physical disabilities.

METHODS

Participants were recruited from a database of individuals with a variety of chronic health conditions, including multiple sclerosis, spinal cord injury, back pain, osteoarthritis, and amputations. To participate in the study, they needed to report having a chronic pain problem. Participants completed an online survey using REDCap assessing average pain intensity (Numerical Rating Scale-11), pain extent (number of painful body areas), sleep disturbance (PROMIS Sleep Disturbance), depression (PROMIS Emotional Distress-Depression) and catastrophizing (Coping Strategies Questionnaire). A total of 455 participants (Mage = 58.9; SD = 11.4), of which 292 (64%) were women, provided complete data. We performed a series of four regression analyses.

RESULTS

After controlling for age and sex, the predictors explained an additional 7-16% of the variance in sleep disturbance. The final model with all of the predictors explained 22%.

CONCLUSIONS

Consistent with the study hypothesis, all the variables examined made significant and independent contributions to the variance in sleep disturbance. The findings provide additional evidence that physical, emotional and cognitive factors all play a role in the sleep quality of individuals with chronic health conditions often associated with physical disabilities.

Case Study: Cognitive Restructuring Hypnosis for Chronic Pain in a Quadriplegic Patient

This case study reports on a 28-year-old male with spinal cord injury (SCI), quadriplegia, and chronic pain with neuropathic characteristics. The treatment had to be adapted to address the patient's needs, as he was on a respirator and paralyzed from the chin down. The intervention consisted of eight 90-minute sessions. The first four sessions were based on a standardized hypnotic cognitive therapy protocol developed for a randomized controlled trial (RCT). The sessions included training in cognitive restructuring skills and a hypnosis session with suggestions that was audiorecorded. Instructions to practice at home, both with the recording and by using self-hypnosis, were provided as well. Most of the outcome domains assessed (i.e., pain intensity, pain interference, sleep quality) showed clinically meaningful improvements that were maintained (or increased) at one-year follow-up. The patient reported that he was still using self-hypnosis at one-year follow-up. His subjective impression of change was positive and he did not report any negative side effects. Results show that the hypnotic cognitive therapy protocol used is a promising intervention that can benefit individuals with SCI presenting with complex symptomatology. Such therapy helps patients by teaching them effective coping strategies that they can use on their own to manage pain and its effects. In addition, it is important to note that this therapy provided benefits to someone who had not experienced any benefits from numerous medications he had tried before treatment. Therefore, the findings support continued efforts to make this treatment more accessible to patients who could benefit from this approach.

Intermittent injection of Methylprednisolone Sodium Succinate in the treatment of Cervical Spinal Cord injury complicated with incomplete paraplegia

OBJECTIVE

To evaluate the clinical efficacy and safety of intermittent injection of methylprednisolone sodium succinate in the treatment of cervical spinal cord injury complicated with incomplete paraplegia.

METHODS

Seventy-eight patients with cervical spinal cord injury complicated with incomplete paraplegia who were admitted between August 2016 and December 2017 were enrolled and grouped into an observation group and a control group using random number table, 39 in each group. Patients in the control group were given vertebral body decompression and bone grafting and internal fixation according to the severity of spinal cord compression, while patients in the observation group were treated by methylprednisolone sodium succinate in addition to the same treatment as the control group. The clinical efficacy and medicine associated adverse reactions were compared between the two groups.

RESULTS

The cure rate of the observation group was significantly higher than that of the control group (46.2% (18/39) vs. 20.5% (8/39)). After the treatment, the Japanese Orthopaedic Association (JOA) score and American Spinal Cord Injury Association (ASIA) score of the two groups after treatment were significantly higher compared to before treatment, and the scores of the observation group were much higher than those of the control group (P<0.05). The incidence of adverse reactions of the observation and control groups was 15.4% and 17.9% respectively, and the difference was not statistically significant (P>0.05).

CONCLUSION

Intermittent injection of methylprednisolone sodium succinate has definite efficacy in treating cervical spinal cord injury complicated with incomplete paraplegia, with a low incidence of adverse reactions; hence it is worth promotion.

What Determines Whether a Pain is Rated as Mild, Moderate, or Severe? The Importance of Pain Beliefs and Pain Interference

Reliable and valid measures of pain intensity are needed to accurately evaluate the efficacy of pain treatments. Perhaps with the exception of faces pain intensity scales, which are thought to reflect both pain intensity and pain affect, the other most commonly used pain intensity scales-Numerical Rating Scales (NRSs), Visual Analog Scales, and Verbal Rating Scales (VRSs)-are all thought to reflect primarily pain intensity or the magnitude of felt pain. However, to our knowledge, this assumption has not been directly tested for VRSs.

METHODS

We evaluated whether VRS pain severity ratings are influenced by pain beliefs, catastrophizing, or pain interference over and above any effects of pain intensity, as measured by a NRS, in 4 samples of individuals with physical disabilities and chronic pain.

RESULTS

As hypothesized, and while controlling for pain intensity as measured by a NRS, higher scores on factors representing pain interference with function, pain catastrophizing, and a number of pain-related beliefs were all associated with a tendency for the study participants to rate their pain as more severe on a VRS.

DISCUSSION

These findings indicate VRSs of pain severity cannot necessarily be assumed to measure only pain intensity; they may also reflect patient perceptions about pain interference and beliefs about their pain. Clinicians and researchers should take these findings into account when selecting measures and when interpreting the results of studies using VRSs as outcome measures.

Pain extent and function in youth with physical disabilities

Background

The aim of this study was to increase our understanding of the role that spatial qualities of pain (location and extent) play in functioning, among youths with disabilities and chronic pain.

Methods

One-hundred and fifteen youths (mean age 14.4 years; SD ±3.3 years) with physical disabilities and chronic pain were interviewed and were asked to provide information about pain locations and their average pain intensity in the past week, and to complete measures of pain interference, psychological function and disability. Most of the participants in this sample were males (56%), Caucasian (68%), and had a cerebral palsy (34%) or muscular dystrophy (25%) problem. Most participants did not report high levels of disability ( X¯=12.7, SD ±9.5, range 0–60) or global pain intensity ( X¯=3.2, SD ±2.4, range 0–10).

Results

Pain at more than one body site was experienced by 91% of participants. There were positive associations between pain extent with pain interference (r = 0.30) and disability (r = 0.30), and a negative association with psychological function (r = –0.38), over and above average pain intensity. Additionally, pain intensity in the back (as opposed to other locations) was associated with more pain interference (r = 0.29), whereas pain intensity in the shoulders was associated with less psychological function (r = –0.18), and pain intensity in the bottom or hips was associated with more disability (r = 0.29).

Conclusion

The findings support the need to take into account pain extent in the assessment and treatment of youths with physical disabilities and chronic pain, call our attention about the need to identify potential risk factors of pain extent, and develop and evaluate the benefits of treatments that could reduce pain extent and target pain at specific sites.

Prevalence and associated factors of pain in the Swiss spinal cord injury population

STUDY DESIGN

Population-based, cross-sectional.

OBJECTIVES

To determine pain prevalence and identify factors associated with chronic pain in individuals with spinal cord injury (SCI) living in Switzerland.

SETTING

Swiss SCI Cohort Study (SwiSCI).

METHODS

Pain characteristics were assessed using an adapted version of the International SCI Pain Basic Data Set, adding one item of the SCI Secondary Conditions Scale to address chronic pain. Pain prevalence was calculated using stratification over demographic, SCI-related and socioeconomic characteristics; odds ratios (adjusted for non-response) for determinants of severity of chronic pain were calculated using stereotype logistic regressions.

RESULTS

Pain (in the past week) was reported by 68.9% and chronic pain by 73.5% (significant 36.9%) of all participants (N=1549; 28% female). Most frequently reported pain type was musculoskeletal (71.1%). Back/spine was the most frequently reported pain location (54.6%). Contrasting the 'significant' to the 'none/mild' category of chronic pain, adjusted odds ratios were 1.54 (95% CI: 1.18-2.01; P<0.01) for women (vs men); 6.64 (95% CI: 3.37-11.67; P<0.001) for the oldest age group 61+ (vs youngest (16-30)); 3.41 (95% CI: 2.07-5.62; P<0.001) in individuals reporting severe financial hardship (vs no financial hardship). Individuals reporting specific SCI-related health conditions were 1.41-2.92 (P<0.05) times more likely to report chronic pain as 'significant' rather than 'none/mild' compared with those without the respective condition.

CONCLUSIONS

Pain is highly prevalent in individuals with SCI living in Switzerland. Considered at risk for chronic pain are women, older individuals and individuals with financial hardship and specific secondary health conditions. Longitudinal studies are necessary to identify predictors for the development of pain and its chronification.

A novel nonpharmacological intervention - breathing-controlled electrical stimulation for neuropathic pain management after spinal cord injury - a preliminary study

Objective

The objective of this study was to examine the effectiveness of a novel nonpharmacological intervention – breathing-controlled electrical stimulation (BreEStim) – for neuropathic pain management in spinal cord injury (SCI) patients.

Subjects and methods

There were two experiments: 1) to compare the effectiveness between BreEStim and conventional electrical stimulation (EStim) in Experiment (Exp) 1 and 2) to examine the dose–response effect of BreEStim in Exp 2. In Exp 1, 13 SCI subjects (6 males and 7 females, history of SCI: 58.2 months, from 7 to 150 months, impairments ranging from C4 AIS B to L1 AIS B) received both BreEStim and EStim in a randomized order with at least 3 days apart. A total of 120 electrical stimuli to the median nerve transcutaneously were triggered by voluntary inhalation during BreEStim or were randomly delivered during EStim. In Exp 2, a subset of 7 subjects received BreEStim120 and 240 stimuli randomly on two different days with 7 days apart (BreEStim120 vs BreEStim240). The primary outcome variable was the visual analog scale (VAS) score.

Results

In Exp 1, both BreEStim and EStim showed significant analgesic effects. Reduction in VAS score was significantly greater after BreEStim (2.6±0.3) than after EStim (0.8±0.3) (P<0.001). The duration of analgesic effect was significantly longer after BreEStim (14.2±6 hours) than after EStim (1.9±1 hours) (P=0.04). In Exp 2, BreEStim120 and BreEStim240 had similar degree and duration of analgesic effects.

Conclusion

The findings from this preliminary study suggest that BreEStim is an effective alternative nonpharmacological treatment for chronic neuropathic pain in patients suffering from SCI.

Relations between pain-related anxiety, tobacco dependence, and barriers to quitting among a community-based sample of daily smokers

There is increasing recognition that complex and potentially bidirectional relations between pain and smoking may be relevant to the maintenance of tobacco addiction. Pain-related anxiety has been identified as a mechanism in the onset and progression of painful disorders, and initial evidence indicates that pain-related anxiety may be associated with essential features of tobacco dependence among smokers with chronic pain. However, there has not been an empirical study of pain-related anxiety in relation to tobacco dependence and self-reported barriers to quitting among a community-based sample of daily smokers. The current sample was comprised of 122 daily smokers who were recruited from the local community to participate in a larger study that included an initial assessment of pain, smoking history, and pain-related anxiety. Approximately 17% of our sample endorsed moderate or severe past-month pain, nearly half met criteria for current anxiety or mood disorder, and about 30% met criteria for a current substance use disorder, exclusive of tobacco dependence. Results indicated that pain-related anxiety was uniquely and positively associated with both tobacco dependence severity scores and self-reported barriers to quitting. These findings lend support to the notion that pain-related anxiety may contribute to the maintenance of tobacco addiction among smokers who experience varying levels of pain severity.