Abstract
The aim of the present study was to investigate the psychobiological personality dimensions in two subgroups of patients with environmental illness (EI). Fifty-nine patients, 34 women and 25 men (aged 32–69 years), were referred for symptoms allegedly caused by abnormal sensitivity to either dental fillings (DF; n=26) or electromagnetic fields (EMF; n=33). For the evaluation of personality, the Swedish 238-item version of the Temperament and Character Inventory (TCI) was used. Compared with a control group, the EMF group scored higher on the temperament dimension Persistence. The DF group scored higher on the TCI subscales Harm Avoidance (fatigability and asthenia) and Self-Directedness (self-acceptance). Women scored higher than men did on the Novelty Seeking and Reward Dependence (RD) dimensions in the DF group and on RD in the control group, indicating an inherited gender difference. No differences were found between men and women in the EMF group. Our results indicate that the high level of persistence found in the EMF group and the high level of fatigability and asthenia in combination with high self-acceptance found in the DF group represent vulnerable personalities. No significant differences were found between the two patient groups, indicating that these groups are quite similar regarding personality. This vulnerability can be expressed as various mental and somatic symptoms, which can be interpreted as EI symptoms by the affected individual.
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Bågedahl-Strindlund M, Ilie M, Furhoff AK, Tomson Y, Larsson KS, Sandborgh-Englund G, Torstenson B, Wretlind K (1997) A multidisciplinary clinical study of patients suffering from illness associated with mercury release from dental restorations: psychiatric aspects. Acta Psychiatr Scand 96:475–482
Bergdahl J, Anneroth G, Stenman E (1994) Description of person with symptoms presumed to be caused by electricity or visual display units—oral aspects. Scand J Dent Res 102:41–45
Bergdahl J, Bergdahl M (2001) Environmental illness: evaluation of salivary flow, symptoms, diseases, medications and psychological factors. Acta Odontol Scand 59:103–110
Bergdahl J, Tillberg A, Stenman E (1998) Odontological survey of referred patients with symptoms allegedly caused by electricity or visual display units. Acta Odontol Scand 56:303–307
Bergdahl J (1995) Psychological aspects of patients with symptoms presumed to be caused by electricity or visual display units. Acta Odontol Scand 53:304–310
Bergman B, Boström H, Larsson KS, Löe H (1992) Potential biological consequences of mercury released from dental amalgam. A state of the art conference. Swedish Medical Research Council, Stockholm
Brändström S, Richter J (2001) Distribution by age and sex of the dimensions of Temperament and Character Inventory in cross-cultural perspective among Sweden, Germany, and the USA. Psychol Rep 89:747–758
Brändström S, Schlette P, Przybeck TR, Lundberg M, Forsgren T, Sigvardsson S, Nylander P-O, Nilsson L-G, Cloninger CL, Adolfsson R (1998) Swedish normative data on personality using the Temperament and Character Inventory. Compr Psychiatry 39:122–128
Cloninger CR, Przybeck TR, Svrakic DM, Wetzel RD (1994) The Temperament and Character Inventory (TCI): a guide to its development and use. Center for Psychobiology of Personality, Washington University, St. Louis, MO
Cloninger CR, Svrakic DM, Przybeck TR (1993) A psychobiological model of temperament and character. Arch Gen Psychiatry 50:975–990
Cloninger CR, Svrakic DM (1994) Differentiating and deviant personality by the seven factor personality model. In: Strack S, Lorr M (eds) Differentiating normal and abnormal personality. Springer Publishing Co, New York, pp 40–64
Cloninger CR (1987) A systematic method for clinical description and classification of personality variants. Arch Gen Psychiatry 44:573–588
Cloninger CR (1994) Genetic structure of personality and learning: a phylogenetic structure. Clin Genet 46:124–137
Cloninger CR (1994) Temperament and personality. Curr Opin Neurobiol 4:266–273
Göthe C-J, Molin C, Nilsson CG (1995) The environmental somatization syndrome. Psychosomatics 36:1–11
Hansson Mild K, Anneroth G, Bergdahl J, Eriksson N, Höög J, Lyskov E, Marqvardsen O, Perris H, Sandström M, Stenberg B, Tillberg A, Widman L, Wilén J (1998) Hypersensitivity to electricity and visual display terminals—an interdisciplinary study. Arbetslivsrapp Arbetslivsinst 11:1401–2928 (in Swedish)
Langworth S (1997) Experiences from amalgam unit at Huddinge hospital somatic and psychosomatic aspects. Scand J Work Health 3:65–67
Lindberg N, Lindberg E, Larsson G (1994) Psychologic factors in the etiology of amalgam illness. Acta Odontol Scand 52:119–228
Magill MK, Surunda A (1998) Multiple chemical sensitivity syndrome. Am Fam Physician 58:721–728
Nylander P-O, Schlette P, Brändström S, Nilsson M, Forsgren T, Forsgren L, Adolfsson R (1996) Migraine: temperament and character. J Psychiatr Res 30(5):359–368
Pélisolo A, André C, Pujol H, Yao SN, Servant D, Braconnier A, Orain-Pélissolo S, Bouchez S, Lépine J-P (2002) Personality dimensions in social phobics with or without depression. Acta Psychiatr Scand 105:94–103
Poonai N, Antony M, Binkley K, Stenn P, Swinson R, Cory P, Silverman F, Tarlo S (2001) Psychological features of subjects with idiopathic environmental intolerance. Psychosom Res 3:537–541
Sparks PJ, Daniell W, Black DW, Kipen HM, Altman LC, Simon GE, Terr AI (1994) Multiple chemical sensitivity syndrome: a clinical perspective. I. Case definition, theories of pathogenesis and research needs. J Occup Med 36:718–730
Sparks PJ, Daniell W, Black DW, Kipen HM, Altman LC, Simon GE, Terr AI (1994) Multiple chemical sensitivity syndrome: a clinical perspective. II. Evaluation, diagnostic testing, treatment and social considerations. J Occup Med 36:731–737
Stenberg B (1994) Office illness. The worker, the work and the workplace. Umeå University Medical Dissertations. University of Umeå, Umeå, Sweden
Svracik DM, Whitehead C, Przybeck TR, Cloninger CR (1993) Differential diagnosis of personality disorders by the seven-factor model of temperament and character. Arch Gen Psychiatry 50:991–999
Tanaka E, Sakamoto S, Kijima N, Kitamura T (1998) Different personalities between depression and anxiety. J Clin Psychol 54:1043–1051
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Bergdahl, J., Mårell, L., Bergdahl, M. et al. Psychobiological personality dimensions in two environmental-illness patient groups. Clin Oral Invest 9, 251–256 (2005). https://doi.org/10.1007/s00784-005-0015-2
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DOI: https://doi.org/10.1007/s00784-005-0015-2