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Clinically relevant...
Clinically relevant contact allergy to formaldehyde may be missed by testing with formaldehyde 1.0%.
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- Dubnika Hauksson, Inese (författare)
- Lund University,Lunds universitet,Yrkes- och miljödermatologi,Forskargrupper vid Lunds universitet,Occupational and Environmental Dermatology,Lund University Research Groups
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- Pontén, Ann (författare)
- Lund University,Lunds universitet,Yrkes- och miljödermatologi,Forskargrupper vid Lunds universitet,Occupational and Environmental Dermatology,Lund University Research Groups
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- Gruvberger, Birgitta (författare)
- Lund University,Lunds universitet,Institutionen för kliniska vetenskaper, Malmö,Medicinska fakulteten,Department of Clinical Sciences, Malmö,Faculty of Medicine
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- Isaksson, Marléne (författare)
- Lund University,Lunds universitet,Yrkes- och miljödermatologi,Forskargrupper vid Lunds universitet,Occupational and Environmental Dermatology,Lund University Research Groups
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- Bruze, Magnus (författare)
- Lund University,Lunds universitet,Yrkes- och miljödermatologi,Forskargrupper vid Lunds universitet,Occupational and Environmental Dermatology,Lund University Research Groups
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(creator_code:org_t)
- 2011-02-03
- 2011
- Engelska.
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Ingår i: British Journal of Dermatology. - : Oxford University Press (OUP). - 1365-2133 .- 0007-0963. ; 164:3, s. 568-572
- Relaterad länk:
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http://www.ncbi.nlm....
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Background: It has been found that patch testing with 15μl formaldehyde 2.0% aq detects twice more allergies than testing with 1.0%. The clinical relevance of positive patch test reactions is often difficult to determine. Use tests are simple to do and help to evaluate the significance of patch test results. Objectives: To study the clinical relevance of contact allergy to formaldehyde detected by 2.0% (0.60 mg/cm²) but not by 1.0%. Patients/Methods: 18 patients positive to formaldehyde 2.0% but negative to 1.0% and a control group of 19 dermatitis patients without allergy to parabens, formaldehyde and formaldehyde releasers were included in the study. Formaldehyde 2000 ppm, the maximum concentration permitted in leave-on cosmetics according to the EU Cosmetics Directive, was added to a batch of a moisturiser preserved with parabens. The same batch without formaldehyde served as control. The study was double-blinded and randomised. The patients were provided with both moisturisers and instructed to apply one of them twice a day on a marked-out 5×5 cm area on the inside of one upper arm and the other moisturiser on the other arm. Reading of the test sites was done once a week for a maximum of 4 weeks. Results: In the control group there were no allergic reactions to any of the moisturisers. 9 of the 17 formaldehyde-allergic patients reacted with an allergic reaction to the moisturiser which contained formaldehyde (p<0.001). No positive reactions were observed to the moisturiser without formaldehyde. Conclusions: Our results demonstrate that contact allergy to formaldehyde 2.0% may be clinically relevant.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Dermatologi och venereologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Dermatology and Venereal Diseases (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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