Long-Term Effects of a Chronic Pain Management Program ('PAIN CAMP') on Refractory Chronic Pain Classified by ICD-11: A Single-Arm Intervention Study.

Many studies have suggested that multidisciplinary care is an effective pain management method; however, this care mode is still not commonly seen in Taiwan. The current study focused on patients within the first multidisciplinary pain management program in Taiwan. The first aim of this study was to investigate the effectiveness of the first multidisciplinary pain management program in Taiwan in terms of improving chronic pain patients' mood, sleep quality, and pain. The second aim was to determine whether improvement in mood or sleep quality was predictive of improvement in pain, and vice versa. Patients from a pain clinic were invited to join a multidisciplinary pain management program. They were assessed each month for improvement in mood, pain, and sleep quality. This study reviewed the medical records of these patients. Twenty male and thirteen female chronic non-malignant pain patients aged between 23 and 64 from a pain clinic. During the first visit, a clinical psychologist assessed the mental health of patients before patients undertook education delivered by nine other professionals in the program. Participants' mood, pain, and sleep quality were assessed monthly. The study used repeated measures analysis of variance to identify changes in patients' mood, pain, and sleep quality after three months of multidisciplinary care. We used linear regression to assess whether changes in mood or sleep quality could predict improvement in pain, and vice versa. The level of anxiety decreased, and sleep quality improved significantly, over the duration of care. The severities of depression and sleep disturbance decreased as the least pain experienced in the past week showed improvement. Improvement in sleep quality was predictive of improvement in least pain. The multidisciplinary pain management program was effective in improving patients' anxiety and sleep quality. Decreased pain brought about improvement in mood. We also found a reciprocal association between improvements in the least pain experienced in the past week and sleep quality.

Background:Paediatric chronic lower limb pain is common, and often distressing and disabling for children and adolescents. Recently, the classification of chronic pain conditions changed within the International Classification of Diseases...

### What you need to know Chronic pain—defined as pain that lasts for more than three months—is common, debilitating, and often difficult to treat.1 Chronic pain is classified in ICD-11...

Multidisciplinary pain treatment – Which patients do benefit?

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4450869/

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We examined the relative impact of baseline anxiety, depression and fear of movement on health related quality of life at 12-month follow-up after a multidisciplinary pain management programme. One hundred and eleven patients who had chronic musculoskeletal pain (mean age 45 years, 65% women) attended during 2003-2005 a multidisciplinary three-phase pain management programme with a total time frame of six to seven months, totalling 19 days. The Beck Anxiety Inventory was used to rate anxiety, the Beck Depression Inventory depression, the Tampa Scale of Kinesiophobia fear of movement. The generic 15D questionnaire was used to assess health related quality of life. Baseline data were collected at admission, follow-up data at 12 months. Mean health related quality of life increased significantly from baseline to 12-month follow-up. Anxiety at baseline predicted significant negative change in the health related quality of life, depression predicted significant positive change in the health related quality of life. Fear of movement did not predict any significant change in the health related quality of life. We concluded that patients with chronic musculoskeletal pain and mild to moderate depression benefit from a multidisciplinary pain management programme in contrast to anxious patients. The findings imply further research with bigger sample sizes, other than HRQoL outcome measures as well as with other groups of patients.

Since the first multidisciplinary pain management clinic in Seattle in the 1960s,1 mental health professionals have been key participants in pain clinic services. This involvement has been driven by several factors: the high prevalence and social cost of chronic pain; the influence of a growing number of pain societies internationally (especially the International Association for the Study of Pain) that have advocated for better pain treatment; the no-fault accident insurance and the workers' compensation systems for whom successful treatment of chronic pain disability was an obvious need; and basic science advances inspired at the outset by the gate control theory of pain in 1965,2 which moved away from a hardwired view of pain as a passive, subjective response to a noxious stimulus and instead conceptualized interactions among stimuli, sensory, and CNS processing systems, and supraspinal (psychological) influences. Psychological treatments in pain management have included hypnosis, relaxation training, operant behavioural, cognitivebehavioural approaches, psychopharmacological treatment, and multidisciplinary pain management programs. Many mental health professionals and psychiatrists developed a special interest in pain management, either as independent consultants or working within these interdisciplinary programs. As it developed from the mid-1980s, epidemiologic research demonstrated that chronic pain was a very prevalent condition, associated with a high burden of illness, personal financial and societal economic burden, and frequently with comorbid psychological and psychosocial and medical problems that augment the severity and chronicity. A Statistics Canada report estimated the prevalence of chronic pain at 20% for women and 15% for men.3 The prevalence of notable and continuous chronic pain (excluding intermittent or nonrecent pain) was estimated at 11% of the adult population, and increasing with age.4 Moulin et al5 reported that 7% of chronic pain patients were unemployed. Health care use and cost increases with higher levels of chronic pain.6 Contrary to the intuitive notion that when the original injury heals the pain ought to resolve, pain and disability both decrease rapidly within the first month and then tend to decrease gradually until about 3 months, after which time, pain levels and disability remain nearly constant for months to years. Settlement of a claim does not necessarily end the chronic or intermittent pain trajectory: between 68% and 86% of those initially off work return to work within a month but the cumulative risk of at least one recurrence within 12 months is 73%, and within 3 years is 84%.7 Mental health workers have long recognized that adverse psychosocial problems, and especially abuse during childhood or lifelong abuse, have a noxious influence on future physical and emotional health. VanHoudenhove et al8 compared groups with chronic fatigue and chronic pain (fibromyalgia) and other medical diagnoses. The prevalence of some form of victimization was not uncommon in groups representing normal controls, those with arthritis or multiple sclerosis, or chronic fatigue and fibromyalgia; however, the groups representing chronic fatigue or fibromyalgia had about 4 times the prevalence of lifelong victimization, compared with the other patient groups and normal group. Emotional neglect and emotional or physical abuse by the family of origin was significantly more frequent than in the other groups. The popular notion that people with chronic pain need to learn to live with it also needs some modification. There is considerable evidence that persistent pain significantly increases the risk of future psychological problems,*11 and likewise, the presence of depression increases the probability of future chronic pain.9'10'12 These problems and associations are not just in North American environments but are worldwide13,14-a truly global problem. What can mental health workers and psychiatrists do about such complex problems? …

Chronic pain has recently been associated with developmental disorders [autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD)]. Regarding chronic pain in adulthood, fibromyalgia, migraine, and chronic low back pain have been associated with ADHD. The ICD-11 disease classification categorizes these pain diseases as chronic primary pain, suggesting high comorbidity with developmental disorders in chronic primary pain. Atypical odontalgia (AO) is a persistent tooth pain that occurs in the absence of any of the usual dental causes, most of which are triggered by dental treatment. Conditions characterized by tooth pain with no apparent cause are also classified as chronic primary pain. Approximately half the patients with AO are diagnosed with psychiatric disorders; the most common are depression (15.4%) and anxiety disorders (10.1%). However, there are no reports on neurodevelopmental disorders comorbid with AO. In the present study, we report a case of a 46-year-old man with numerous complaints (e.g., occlusal instability, difficulty eating, difficulty speaking), who took work leave due to worsening of his symptoms after periodontal scaling (“gingival recession” and “aggressive periodontal treatment”) and frequently expressed dissatisfaction and anger at the hospital, making the dental treatment difficult. After a referral to a psychiatrist specializing in chronic pain, AO and previously undiagnosed comorbidity of ASD and ADHD were confirmed. Atypical antipsychotic risperidone for ASD irritability and an ADHD medication, atomoxetine dramatically reduced anger, pain, anxiety, depression, and pain catastrophizing thoughts, leading to reduced obsession with his symptoms and less frequent complaints. After risperidone (1 mg/day) + atomoxetine (120 mg/day) were ultimately prescribed after adjustment, he was able to return to work 226 days after initiation of psychiatric treatment. Recent studies show that comorbidity of developmental disorders in patients with chronic pain is likely to be undetected. Clinicians should include screening for ASD and ADHD not only in cases of fibromyalgia, migraine, and chronic low back pain, but also in orofacial pain such as AO and other treatments for chronic primary pain. For patients diagnosed with ASD or ADHD, an effective drug therapy for ASD and ADHD should be considered.

This study examined the impact of demographic variables and psychiatric comorbidities on the current perception threshold (CPT) values among patients recently suffering from chronic primary and secondary pain defined recently. A total of 182 patients, comprising 65% females, were analyzed to determine CPT differences across age, gender, and psychiatric status. Our results indicated that CPT values were significantly higher among males (15.6 ± 6.9 μA) than among females (12.6 ± 9.0 μA; p = 0.0126). Although CPT values tended to increase with age, the differences were not significant. Psychiatric comorbidities significantly impact CPT values in patients with chronic primary pain. The mean CPT value for patients who received psychiatric visits was 9.6 ± 2.7 μA, which was significantly lower than that observed in patients without such consultations (15.0 ± 14.7 μA). In patients with chronic secondary pain, those who received psychiatric visits exhibited CPT values of 13.3 ± 5.1 μA. These findings indicate that gender and psychiatric visits significantly influenced sensory perception in patients with chronic pain, underscoring the necessity for tailored pain management strategies. Elevated CPT values in patients with chronic primary pain also suggest the presence of minor peripheral neuropathy, highlighting the importance of comprehensive neurological assessments.

Anger is a negative emotion characterized by antagonism toward someone or something, is rooted in an appraisal or attribution of wrongdoing, and is accompanied by an action tendency to undo the wrongdoing. Anger is prevalent in individuals with chronic pain, especially those with chronic primary pain. The associations between anger and pain-related outcomes (e.g., pain intensity, disability) have been examined in previous studies. However, to our knowledge, no systematic review or meta-analysis has summarized the findings of anger-pain associations through a focus on chronic primary pain. Hence, we sought to summarize the findings on the associations ofanger-related variables with pain and disability in individuals with chronic primary pain. All studies reporting at least one association between anger-related variables and the two pain-related outcomes in individuals with chronic primary pain were eligible. We searched electronic databases using keywords relevant to anger and chronic primary pain. Multiple reviewers independently screened for study eligibility, data extraction, and methodological quality assessment. Thirty-eight studies were included in this systematic review, of which 20 provided data for meta-analyses (2,682 participants with chronic primary pain). Of the included studies, 68.4% had a medium methodological quality. Evidence showed mixed results in the qualitative synthesis. Most anger-related variables had significant positive pooled correlations with small to moderate effect sizes for pain and disability. Through a comprehensive search, we identified several key anger-related variables associated with pain-related outcomes. In particular, associations with perceived injustice were substantial.

Exercise as a Treatment for Chronic Pain