Wolnei Caumo
ORCID: 0000-0002-5083-4658
· 14 papers in corpus
2026
Development and Validation of the Brief Inventory of Treatment Expectations in Chronic Pain (BITEC).
BackgroundExpectations shape therapeutic outcomes, yet their systematic assessment remains limited in clinical and research settings. To address this gap, we developed and validated the Brief Instrument for the Assessment of Treatment Expec…
observational
2026
BACKGROUND: The biopsychosocial model positions fibromyalgia (FM) as the result of altered pain modulation shaped by trauma, psychological vulnerability, and structural stressors. The Sense of Coherence (SOC) may be a key resilience factor …
observational
2021
BACKGROUND: The main symptoms of fibromyalgia comprise diffuse pain, disability, depressive symptoms, catastrophizing, sleep disruption and fatigue, associated with dysfunction of the descending pain-modulating system (DPMS). OBJECTIVES: W…
rct
2020
This randomized, double-blinded, placebo-controlled trial tested the hypothesis that 20mg of melatonin before and during the first cycle of adjuvant chemotherapy for breast cancer (ACBC) reduced the side effects associated with cognitive im…
observational
2019
Central sensitivity syndrome (CSS) consists of adaptive pathophysiological changes associated with neuroplasticity in some chronic pain disorders. It could be grouped in two main conceptual conditions: one includes those chronic pain patien…
rct
2019
Background: Adjuvant chemotherapy for breast cancer (ACBC) has been associated with fatigue, pain, depressive symptoms, and disturbed sleep. And, previous studies in non-cancer patients showed that melatonin could improve the descending pai…
meta-analysis
2019
Background: Opioid long-term therapy can produce tolerance, opioid-induced hyperalgesia (OIH), and it induces dysfunction in pain descending pain inhibitory system (DPIS). Objectives: This integrative review with meta-analysis aimed: (i) To…
rct
2017
BACKGROUND: An imbalance in the excitatory/inhibitory systems in the pain networks may explain the persistent chronic pain after hallux valgus surgery. Thus, to contra-regulate this dysfunction, the use of transcranial direct current stimul…
other
2015
BACKGROUND AND OBJECTIVES: Central sensitivity syndrome (CSS) encompasses disorders with overlapping symptoms in a spectrum of structural pathology from persistent somatic nociception (eg, osteoarthritis) to absence of tissue injury such as…
rct
2015
Transcranial direct current stimulation (tDCS) and melatonin can effectively treat pain. Given their potentially complementary mechanisms of action, their combination could have a synergistic effect. Thus, we tested the hypothesis that comp…
rct
2014
BACKGROUND: Central disinhibition is a mechanism involved in the physiopathology of fibromyalgia. Melatonin can improve sleep quality, pain and pain threshold. We hypothesized that treatment with melatonin alone or in combination with amitr…
rct
2013
BACKGROUND: Previous studies have suggested that melatonin may produce antinociception through peripheral and central mechanisms. Based on the preliminary encouraging results of studies of the effects of melatonin on pain modulation, the im…
rct
2013
Endometriosis-associated chronic pelvic pain (EACPP) presents with an intense inflammatory reaction. Melatonin has emerged as an important analgesic, antioxidant, and antiinflammatory agent. This trial investigates the effects of melatonin …
2013
Chronische Beckenschmerzen sind kontinuierlich oder wiederholt auftretende Schmerzen im Bereich des Beckens oder Unterbauches, die über 6 Monate oder länger persistieren. Vermutlich sind rund 4 % der Bevölkerung betroffen. Häufige Ursache i…