
Roland StaudUniversity of Florida | UF · Department of Medicine
Roland Staud
MD
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378
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Introduction
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July 1992 - present
Publications
Publications (378)
Altered neural signaling in fibromyalgia syndrome (FM) was investigated with functional magnetic resonance imaging (fMRI). We employed a novel fMRI network analysis method, Structural and Physiological Modeling (SAPM), which provides more detailed information than previous methods. The study involved brain fMRI data from participants with FM (N = 2...
Background
Previous research has demonstrated that placebo induction manipulations can reduce an individual’s pain through non-specific mechanisms, such as expectancy manipulations. However, despite robust research characterizing these effects, individual differences in predicting placebo analgesic responses are not well understood.
Methods
Fifty-...
Introduction
Factors contributing to individual differences in knee osteoarthritis remain elusive. Dispositional traits and socioeconomic status are independent predictors of mental and physical health, although significant variability remains. Dispositional traits serve as the biological interface for life experiences.
Objectives
We investigate g...
Objective
The objective was to examine potential pathways linking neighborhood disadvantage to pain severity in individuals with knee pain consistent with or at risk for knee osteoarthritis (KOA).
Methods
The current investigation is a cross‐sectional analysis. Data were collected from 140 middle‐aged to older non‐Hispanic White and non‐Hispanic B...
Background/Objectives: There is a subset of patients with pain who become worse after exercise. To explore this, we examined the responses of people with chronic primary pain to a standardized high intensity exercise protocol used to induce delayed onset muscle soreness (DOMS). Methods: Ten participants with a diagnosis of chronic widespread muscle...
Introduction
Movement-evoked pain (MEP) impacts a substantial proportion of US adults living with chronic pain. Evidence suggests that MEP is influenced by numerous biopsychosocial factors and mediated by mechanisms differing from those of spontaneous pain. However, both characteristic and mechanistic knowledge of MEP remain limited, hindering effe...
Chronic musculoskeletal pain including knee osteoarthritis (OA) is a leading cause of disability worldwide. Previous research indicates ethnic-race groups differ in the pain and functional limitations experienced with knee OA. However, when socioenvironmental factors are included in analyses, group differences in pain and function wane. Pain-relate...
Participants with fibromyalgia (FM) and healthy controls (HC) experienced an identical ‘threat/safety’ experimental pain paradigm while undergoing functional magnetic resonance imaging (fMRI) to investigate the differences in pain processing between the two groups. In the ‘threat’ (Pain) imaging runs, participants were told that they would receive...
Background
The concordance between radiograph-derived Kellgren–Lawrence (KL) scores for knee osteoarthritis (KOA) and experimental and clinical pain and KOA-related physical function is conflicting.
Objectives
We investigate whether the inclusion of dispositional traits reduces variability between KOA radiographic findings, experimental pain, clin...
Objective
Chronic musculoskeletal pain is associated with neurobiological, physiological, and cellular measures. Importantly, we have previously demonstrated that a biobehavioral and psychosocial resilience index appears to have a protective relationship on the same biomarkers. Less is known regarding the relationships between chronic musculoskelet...
Widespread pain and hyperalgesia are characteristics of chronic musculoskeletal pain conditions, including fibromyalgia syndrome (FM). Despite mixed evidence, there is increasing consensus that these characteristics depend on abnormal pain augmentation and dysfunctional pain inhibition. Our recent investigations of pain modulation with individually...
Introduction: Previous research indicates ethnic/race group differences in pain and neurodegenerative diseases. Accounting for socioenvironmental factors reduces ethnic/race group differences in clinical and experimental pain. In the current study sample, we previously reported that in individuals with knee pain, ethnic/race group differences were...
Chronic musculoskeletal pain is a leading cause of disability worldwide. Previous research indicates ethnic/race groups are disproportionately affected by chronic pain conditions. However, when considering socioenvironmental factors these disparities are no longer observed. Ethnic/race group differences have also been reported in pain-related brain...
Chronic pain is a stressor that affects whole person functioning. Persistent and prolonged activation of the body's stress systems without adequate recovery can result in measurable physiological and neurobiological dysregulation recognized as allostatic load. We and others have shown chronic pain is associated with measures of allostatic load incl...
Background:
Task-based functional connectivity (FC) of pain-related regions resulting from expectancy-based placebo induction has yet to be examined, limiting our understanding of regions and networks associated with placebo analgesia.
Methods:
Fifty-five healthy pain-free adults over 18 (M = 22.8 years, SD = 7.75) were recruited (65.5% women; 6...
Introduction:
Fibromyalgia and provoked vestibulodynia are two chronic pain conditions that disproportionately affect women. The mechanisms underlying the pain in these conditions are still poorly understood, but there is speculation that both may be linked to altered central sensitization and autonomic regulation. Neuroimaging studies of these co...
Shoulder pain is a highly prevalent musculoskeletal condition that frequently leads to suboptimal clinical outcomes. This study tested the extent to which circulating inflammatory biomarkers are associated with reports of shoulder pain and upper-extremity disability for a high-risk genetic by psychological subgroup (catechol-O-methyltransferase [CO...
Background and purpose
We and others have reported ethnic/race group differences in clinical pain, physical function, and experimental pain sensitivity. However, recent research indicates that with consideration for socioenvironmental factors, ethnicity/race differences become less or non-significant. Understanding of factors contributing to pain i...
Background
Pain is a dynamic phenomenon dependent on the balance of endogenous excitatory and inhibitory systems, which can be characterized by quantitative sensory testing. Many previous studies of pain modulatory capacity of patients with fibromyalgia syndrome (FM) have reported decreased pain inhibition or increased pain facilitation. This is th...
Source citation:
Farag HM, Yunusa I, Goswami H, et al. Comparison of amitriptyline and US Food and Drug Administration-approved treatments for fibromyalgia: a systematic review and network meta-analysis. JAMA Netw Open. 2022;5:e2212939. 35587348.
Large variability in the individual response to even the most-efficacious pain treatments is observed clinically, which has led to calls for a more personalized, tailored approach to treating patients with pain (i.e., “precision pain medicine”). Precision pain medicine, currently an aspirational goal, would consist of empirically-based algorithms t...
Introduction
Simply inspecting one’s own body can reduce clinical pain and magnification of body parts can increase analgesia. Thus, body perceptions seem to play an important role for analgesia. Conversely, pain may also affect bodily perceptions. Therefore, we evaluated the effects of clinical and/or experimental pain on perceived hand size in fi...
Prior cohort studies validated that a subgroup defined by a specific COMT genotype and pain catastrophizing is at increased risk for heightened responses to exercise-induced or surgically induced shoulder pain. In this clinical trial, we used our preclinical model of exercise-induced muscle injury and pain to test the efficacy of interventions matc...
Chronic pain associated with fibromyalgia (FM) affects a large portion of the population but the underlying mechanisms leading to this altered pain are still poorly understood. Evidence suggests that FM involves altered neural processes in the central nervous system and neuroimaging methods such as functional magnetic resonance imaging (fMRI) are u...
Objectives:
Chronic pain, cognitive deficits, and pain-related disability are inter-related. The prevalence of chronic pain and undiagnosed cognitive difficulties in middle age and older adults is increasing. Of the cognitive systems, executive function and episodic memory are most relevant to chronic pain. We examined the hypothesis that cognitiv...
Introduction:
Fibromyalgia (FM) is a chronic pain syndrome associated with fatigue, insomnia, dyscognition, and emotional distress. Critical illness mechanisms include central sensitization to nociceptive and non-nociceptive stimuli often resulting in hypersensitivity to all sensory input.
Areas covered:
The clinical presentation of FM can vary...
Knee osteoarthritis (OA) is a common progressive joint disease with increasing prevalence. There are inconsistent findings on the concordance between radiograph derived Kellgren-Lawrence (KL) scores and pain measures. We have previously reported that dispositional traits predict sensory sensitivity and psychosocial functioning. This study aims to d...
Chronic pain is a significant public health problem, and the prevalence and societal impact continues to worsen annually. Multiple cognitive and emotional factors are known to modulate pain, including pain catastrophizing, which contributes to pain facilitation and is associated with altered resting-state functional connectivity in pain-related cor...
Patients with bi-allelic loss of function mutations in the voltage-gated sodium channel Nav1.7 present with congenital insensitivity to pain (CIP), whilst low threshold mechanosensation is reportedly normal. Using psychophysics (n = 6 CIP participants and n = 86 healthy controls) and facial electromyography (n = 3 CIP participants and n = 8 healthy...
Dispositional traits can be protective or contribute to increased vulnerability in individuals with chronic pain. This study aims to evaluate the association between two dispositional trait measures, affect balance style and multi-domain trait groups, with psychosocial measures, clinical pain, functional pain, and experimental pain at two years in...
Objective
Knee osteoarthritis (OA) is a leading source of pain and disability among older adults. Self‐management (SM) strategies are recommended to manage OA symptoms. Sociodemographic and clinical characteristics, along with other factors, may influence SM utilization rate. This study sought to examine the prevalence and correlates of SM use for...
The cause for the increased sensitivity of fibromyalgia (FM) patients to painful stimuli is unclear but sensitization of dorsal horn spinal cord neurons has been suggested. There, critical changes of sensory information occur which depend on the plasticity of second-order neurons and descending pain modulation, including facilitation and inhibition...
Chronic pain is variably associated with brain structure. Phenotyping based on pain severity may address inconsistencies. Sociodemographic groups also differ in the experience of chronic pain severity. Whether differences by chronic pain severity and/or sociodemographic groups are indicated in pain-related areas of the brain is unknown. Relations b...
Study objectives:
To examine whether cognitive behavioral treatments for insomnia (CBT-I) and pain (CBT-P) lead to neural activation changes in response to pain in fibromyalgia.
Methods:
32 fibromyalgia patients (Mage=55.9, SD=12.2) underwent an experimental pain protocol during functional magnetic resonance imaging (fMRI) and completed 14-daily...
Chronic pain affects mental and physical health and alters brain structure and function. Interventions that reduce chronic pain are also associated with changes in the brain. A number of non-invasive strategies can promote improved learning and memory and increase neuroplasticity in older adults. Intermittent fasting and glucose administration repr...
Background:
Pain is the hallmark symptom of knee osteoarthritis (OA), and varies widely across individuals. Previous research has demonstrated both fluctuating and stable pain trajectories in knee OA using various time periods. Changes in pain assessed quarterly (i.e. 3-month intervals) in knee OA are relatively unknown. The current study aimed to...
Background:
African American (AA) older adults with knee osteoarthritis experience more severe chronic pain and advanced physical disability. One of the most prominent stimuli that provoke knee pain is movement. Research suggests that compared to White Americans, AAs report significantly higher movement-evoked pain (MEP) in the knee. However, litt...
Considerable evidence suggests that knee osteoarthritis (OA)-related clinical pain and disability significantly differs according to racial background. However, brain mechanisms underlying these differences are not well understood. We investigated altered central pain processing in a sample comprised of Non-Hispanic Black (NHB) and Non-Hispanic Whi...
Previous studies have identified decreases in pain-related activations after placebo induction. However, differences in functional connectivity (FC) of pain-related regions resulting from expectancy-based placebo induction have yet to be examined, limiting our understanding of regions and potential networks associated with placebo analgesia.Thirty-...
Pain catastrophizing contributes to heightened levels of pain and disability. Previous evidence demonstrates that non-Hispanic Blacks (NHB) report higher levels of both pain and catastrophizing than non-Hispanic whites (NHW). The current study investigates whether pain catastrophizing mediates the relationship between ethnicity/race and pain, disab...
Compared to Non-Hispanic Whites (NHWs), Non-Hispanics Blacks (NHBs) report greater pain intensity and worse physical functioning. It has been hypothesized that movement-evoked pain might be a better predictor of pain-related outcomes; yet, limited research exists regarding the extent to which movement-evoked pain (MEP) differs across racial and eth...
The current cross-sectional study investigates whether pain catastrophizing mediates the relationship between ethnicity/race and pain, disability and physical function in individuals with knee osteoarthritis. Furthermore, this study examined mediation at 2-year follow-up. Participants included 187 community-dwelling adults with unilateral or bilate...
Introduction: Dispositional traits can be protective or contribute to increased vulnerability in individuals with chronic pain. This study aims to evaluate the predictive utility of two dispositional trait measures, affect balance style and multi-domain trait groups specific to clinical pain, psychosocial functioning, experimental pain, and health...
Background:
Non-Hispanic black (NHB) individuals have increased risk of Alzheimer's disease (AD) relative to non-Hispanic whites (NHW). Ethnicity/race can serve as a proxy sociodemographic variable for a complex representation of sociocultural and environmental factors. Chronic pain is a form of stress with high prevalence and sociodemographic dis...
Chronic musculoskeletal (MSK) pain is disabling to individuals and burdensome to society. A relationship between telomere length and resilience was reported in individuals with consideration for chronic pain intensity. While chronic pain associates with brain changes, little is known regarding the neurobiological interface of resilience. In a group...
Fibromyalgia is a chronic widespread pain syndrome associated with hypersensitivity to nociceptive stimuli. This increased sensitivity of FM patients has been associated with central sensitization of dorsal horn neurons. Increasing evidence, however, suggests that the mechanisms of FM hypersensitivity not only affect pain but include light, smell,...
Our prior studies identified a high-risk phenotype (i.e. high pain sensitivity variant of the catechol-O-methyltransferase (COMT) gene (SNP rs6269) and pain catastrophizing scores) for shoulder pain. The current study identified sensory and psychological predictors of heightened pain responses following exercise-induced shoulder injury. Healthy par...
Objective
The relationship between psychosocial stress and chronic pain is bidirectional. An improved understanding regarding the relationships among chronic pain, life stress, and ethnicity/race will inform identification of factors contributing to health disparities in chronic pain and improve health outcomes. This study aims to assess relationsh...
Knee osteoarthritis (OA) is a leading cause of late life pain and disability, and non-Hispanic black (NHB) adults experience greater OA-related pain and disability than non-Hispanic whites (NHWs). Recent evidence implicates psychosocial stress, cognitive-attentional processes, and altered central pain processing as contributors to greater OA-relate...
Introduction:
Approximately 50% of individuals with fibromyalgia (a chronic widespread pain condition) have comorbid insomnia. Treatment for these comorbid cases typically target pain, but growing research supports direct interventions for insomnia (eg, cognitive behavioural treatment for insomnia (CBT-I)) in these patients. Previous research sugg...
Objective
Chronic pain studies investigating the ability to detect sensory processing differences related to thalamic gating using electroencephalographic (EEG) alpha have yielded conflicting results. Alpha’s basic psychometric properties in pain populations requires further study. The present study reports on the test-retest reliability and intern...
Opioid use and sleep disruption are prevalent in fibromyalgia. Yet, the effects of opioids on physiological sleep in fibromyalgia are unclear. This study assessed associations between opioid use/dosage and polysomnographically assessed sleep in patients with fibromyalgia and insomnia (FMI) and examined moderating effects of age and pain. Participan...
Genetic polymorphisms have been shown to affect opioid requirement for pain relief. However, true genetic effect is often difficult to assess due to underlying pain conditions and placebo effects. The goal of this study was to understand how common polymorphisms affect opioid effects while controlling for these factors. A randomized, double-blind,...
Introduction
Fibromyalgia (FM) is characterized by high rates of insomnia and abnormal central pain processing/heightened response to stimuli (i.e., central sensitization). This study examines whether cognitive behavioral treatments (CBTs) that target insomnia and pain improve central pain processing [indicated by decreased response to quantitative...
Purpose
Research indicates pain-related disparities in the impact of knee osteoarthritis (OA) across both sex and ethnicity/race. While several factors likely contribute to these disparities, experiences of discrimination are associated with poor OA-related pain, disability, and functional performance. However, the mechanisms that mediate experienc...
Objective:
Chronological age is a risk factor in chronic pain; however, aging research supports the premise that physical and psychological health may better predict perceived age. Given the lack of evidence on perceived age in the context of chronic pain, the current study presents novel findings about the relationship between perceived age, chro...
Sleep and opioid medications used to treat insomnia and chronic pain are associated with adverse side effects (falls and cognitive disturbance). Although behavioural treatments such as cognitive behavioral therapy for insomnia (CBT‐I) and pain (CBT‐P) improve sleep and clinical pain, their effects on sleep and opioid medication use are unclear. In...
Synopsis
CNS changes seem to play a critical role for fibromyalgia abnormalities, including pain, hyperalgesia, fatigue, and dyscognition. Like many other chronic pain syndromes, fibromyalgia, is a treatable illness. Effective disease management programs include SNRIs, aerobic exercise and CBT. Future treatment strategies will benefit from focusing...
Introduction:
Conditioned pain modulation (CPM) is a laboratory test resulting in pain inhibition through activation of descending inhibitory mechanisms. Older adults consistently demonstrate reduced CPM compared with younger samples; however, studies of sex differences in younger cohorts have shown mixed results.
Objectives:
This study tested f...
Quantitative sensory testing (QST) is used to systematically interrogate normal responding and alterations of nervous system function, including pain-related central sensitization (CS). However, up to now, QST of CS in human subjects has been mostly focused on temporal summation of second pain (TSSP), has been difficult to perform, and has been ass...
Background
Knee osteoarthritis (OA) disproportionately affects racial and ethnic minorities. Non-Hispanic Blacks (NHB) report a higher prevalence and severity of knee OA symptoms than their non-Hispanic White (NHW) counterparts. The role of poverty in explaining this disparity remains unclear.
Objective
The overall aim of this cross-sectional stud...
Opioid use and sleep disruption are prevalent in fibromyalgia. Yet, the effects of opioids on physiological sleep in fibromyalgia are unclear. This study assessed associations between opioid use/dosage and polysomnographically assessed sleep in patients with fibromyalgia and insomnia (FMI) and examined moderating effects of age and pain. Participan...
Prolonged, disabling fatigue is the hallmark of chronic fatigue syndrome (CFS). Previous neuroimaging studies have provided evidence for nervous system involvement in CFS etiology, including perturbations in brain structure/function. In this arterial spin labeling (ASL) MRI study, we examined variability in cerebral blood flow (CBFV) and heart rate...
Objective:
To characterize neuropathic-like pain among individuals with or at risk for knee osteoarthritis.
Subjects:
One hundred eighty-four individuals who self-identified as non-Hispanic black or non-Hispanic white and presented with unilateral or bilateral knee pain.
Design:
Neuropathic-like pain was assessed using the painDETECT, and thos...
Background:
Knee osteoarthritis (OA) is a pervasive musculoskeletal condition, often exacerbated by movement-evoked pain (MEP). Despite established research demonstrating significant racial differences in OA pain, few studies have investigated ethnic/racial group differences in MEP and lower extremity function and their association with psychosoci...
Introduction
Patients with Fibromyalgia (FM) are frequently prescribed opioids to treat chronic pain and sleep disturbances. However, opioid use is associated with self-reported/actigraphic sleep disruption, and research suggests opioid effects may depend on age, dosage, or pain intensity. Whether opioid use/dosage affect physiological sleep (polys...
Introduction
CBTi improves sleep and pain in patients with chronic pain, but significant pain effects are rarely found in individual trials - possibly due to floor effects as trials rarely screen for baseline pain intensity (bPI). The present study examines whether bPI moderates the effect of CBTi on sleep and pain in adults with FM.
Methods
Adult...
In adults with osteoarthritis, clinical pain and disability have been shown to differ across sex and ethnicity/race. Recent evidence also indicates changes in pain-related brain structure across these groups. Resilience is associated with lower pain and greater functioning. However, the relationship between resilience and the brain is not well unde...
Telomere length, a measure of cellular aging, is negatively associated with chronic pain severity and serves as an indicator of overall system functioning. While psychological resilience factors such as optimism, acceptance, positive affect and active coping have been associated with lower levels of clinical pain and greater physical functioning, i...
Telomere length, a measure of cellular aging, is inversely associated with chronic pain severity. While psychological resilience factors (e.g., optimism, acceptance, positive affect, active coping) are associated with lower levels of clinical pain and greater physical functioning, it is unknown whether resilience may buffer against telomere shorten...
Objective:
Racial/ethnic disparities in pain are well-recognized, with non-Hispanic blacks (NHBs) experiencing greater pain severity and pain-related disability than non-Hispanic whites (NHWs). Although numerous risk factors are posited as contributors to these disparities, there is limited research addressing how resilience differentially influen...