title: Cognitive, behavioral, and physiological reactivity to chronic itching: analogies to chronic pain.
abstract: It is well-known that cognitive, behavioral, and physiological reactivity to pain, such as catastrophizing, avoidance of activity, and increased physiological responses, can unfavorably affect long-term outcomes in patients with chronic pain. In line with similarities between the psychophysiology of pain and itching, corresponding mechanisms may be relevant for the maintenance of chronic itching. The goal of this study was to examine the role of self-reported cognitive, behavioral, and physiological reactivity factors on itching-related outcomes in 235 patients with chronic skin diseases suffering from chronic itching. Sequential regression analyses indicate that all 3 reactivity systems predicted itching-related outcomes. Specifically, more catastrophizing, higher levels of avoidance of activity, and heightened self-reported physiological reactivity predicted more itching, more scratching, and a reduced disease-related quality of life. The results suggest that a psychological model as described for chronic pain is a useful starting point for study of the maintaining mechanisms of chronic itching.
authors.affiliation: Department of Medical Psychology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. L.Verhoeven@mps.umcn.nl
authors.forename: Lisette
authors.initials: L
authors.lastname: Verhoeven
authors.forename: Floris
authors.initials: F
authors.lastname: Kraaimaat
authors.forename: Piet
authors.initials: P
authors.lastname: Duller
authors.forename: Peter
authors.initials: P
authors.lastname: van de Kerkhof
authors.forename: Andrea
authors.initials: A
authors.lastname: Evers
mesh_terms: D000223:Adaptation, Psychological / Q000502:physiology*; D000293:Adolescent; D000328:Adult; D000368:Aged; D001143:Arousal / Q000502:physiology*; D002908:Chronic Disease; D003674:Defense Mechanisms; D003876:Dermatitis, Atopic / Q000503:physiopathology / Q000523:psychology; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000503:physiopathology / Q000523:psychology*; D011537:Pruritus / Q000503:physiopathology / Q000523:psychology*; D011565:Psoriasis / Q000503:physiopathology / Q000523:psychology; D011788:Quality of Life / Q000523:psychology; D012803:Sick Role; D013223:Statistics as Topic