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Insomnia-related Memory Impairment in Individuals With Very Complex Chronic Pain.

To investigate the specific effect of insomnia on neuropsychological functioning in patients with very complex chronic pain.

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Weeding Out the Problem: The Impact of Preoperative Cannabinoid Use on Pain in the Perioperative Period.

The recreational and medical use of cannabinoids has been increasing. While most studies and reviews have focused on the role of cannabinoids in the management of acute pain, no study has examined the postoperative outcomes of surgical candidates who are on cannabinoids preoperatively. This retrospective cohort study examined the impact of preoperative cannabinoid use on postoperative pain scores and pain-related outcomes in patients undergoing major orthopedic surgery.

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Pilot Study of Injection of OnabotulinumtoxinA Toward the Sphenopalatine Ganglion for the Treatment of Classical Trigeminal Neuralgia.

The sphenopalatine ganglion (SPG) has previously been targeted in trigeminal neuralgia (TN), but its role in this condition has not been established.

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Characterization and predictive mechanisms of experimentally induced tension-type headache.

Studies have shown it is possible to elicit a tension-type headache episode in 15 to 30% of healthy individuals following a tooth-clenching or stress-inducing task. Despite this, no studies have attempted to understand why some healthy individuals develop a headache episode while others do not.

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Acceptance and Commitment Therapy for Chronic Pain: Does Post-traumatic Stress Disorder Influence Treatment Outcomes?

The aim of this study was to determine whether post-traumatic stress disorder (PTSD) moderates treatment outcomes in Acceptance and Commitment Therapy for chronic pain.

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When “A Headache is Not Just a Headache”: A Qualitative Examination of Parent and Child Experiences of Pain After Childhood Cancer.

Today over 80% of children diagnosed with cancer are expected to survive. Despite the high prevalence of pain associated with the diagnosis and treatment of childhood cancer, there is a limited understanding of how having cancer shapes children's experience and meaning of pain after treatment has ended. This study addresses this gap by exploring childhood cancer survivors' (CCS') experiences of pain from their perspective and the perspective of their parents.

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Cebranopadol, a novel first-in-class analgesic drug candidate: first experience with cancer-related pain for up to 26 weeks.

Pain is one of the most prevalent symptoms associated with cancer. Strong opioids are commonly used in the analgesic management of the disease, but carry the risk of severe side effects. Cebranopadol is a first-in-class drug candidate, combining nociceptin/orphanin FQ peptide and opioid peptide receptor agonism. For cancer patients, frequently experiencing multimorbidities and often exposed to polypharmacy, cebranopadol is easy to handle given its once-daily dosing, the small tablet size that enables swallowing, and the option to flexibly titrate to an effective dose.

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The Role of Fatigue in Functional Outcomes for Youth with Chronic Pain.

As a complex multidimensional construct, fatigue may play an important role in the physical and psychosocial functioning of youth with chronic pain. Based on a model previously tested in adults, the current study similarly utilized Patient-Reported Outcomes Measurement System (PROMIS) to examine how fatigue contributes to functional outcomes for youth with chronic pain. The model tested self-reported ratings of pain intensity, depressive symptoms, and sleep disturbance as predictors of outcomes (mobility, pain-related interference, and school functioning) as mediated by ratings of fatigue.

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Influence of chronotype on migraine characteristics.

The aim of this study was to investigate chronotype in migraine patients and possible influences on the clinical expression of the disease.

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Development and course of chronic widespread pain: The role of time and pain characteristics (the HUNT pain study).

Chronic widespread pain (CWP) is common and associated with loss of functioning and health. Subjects with chronic non-widespread pain (CnWP) are at increased risk of developing CWP, but few studies have described the nature of the development over time.We followed a random sample of 3105 participants from the population-based HUNT-3 study with five annual measurements of pain over four years. While 29% reported CWP on at least one occasion, only 7% reported it consistently on four or fsive occasions. The average annual cumulative incidence was 5% and the recovery rate was 38%. In mutual adjusted analysis, the risk of developing CWP from one year to the next was higher in subjects with chronic pain (RR=2.4; 95% CI: 1.8-3.4), two or more pain regions (RR= 3.3; 95% CI: 2.5-4.4), moderate pain or more (RR=1.8; 95% CI: 1.5-2.6) and with comorbid chronic disease (RR=1.6; 95% CI: 1.3-1.9). Developing CWP was associated with a modest concurrent change in self-reported mental and physical health. The risk of developing CWP between the fourth and fifth occasions was 80% lower for subjects without a history of CWP, compared to those with. For subjects without previous CWP, the development was associated with previously reported CnWP, but not with the number of occasions with CnWP, in analyses adjusted for sex, age and pain severity.A substantial proportion of the new cases of CWP originates from subjects floating below and above the definition for CWP over time, and thus, do not seem to involve major transitions in health.

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