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At least 865 records · Page 48Linked to original sources
PubMed1982

The relationship between exposure to fragrance materials and persistent light reaction in the photosensitivity dermatitis with actinic reticuloid syndrome.

Contact allergic sensitivity to allergens such as plants of the Compositae family is a feature of the chronic skin reaction seen in the photosensitivity dermatitis with actinic reticuloid syndrome. In fifty patients with this syndrome an increased incidence of contact allergic sensitivity to some common fragrance materials was demonstrated. Evidence is also presented, both by in vitro and in vivo studies, which indicates that a phototoxic mechanism is involved. The relevance of continued exposure to common allergens and their involvement in photosensitization mechanisms is discussed in an attempt to explain the state of 'persistent light reaction'.

Humans↗
PubMed1984

Transient and persistent photosensitivity due to musk ambrette. Clinical and photobiological studies.

Musk ambrette caused contact photosensitivity in five patients. One patient showed transient light reactivity and four showed persistent light reactivity. Tests with artificial radiation were performed on normal skin without musk ambrette being added. All patients reacted abnormally to UV-B and three to UV-A. In particular the patient with transient light reactivity showed abnormal responses to UV-B and UV-A. The patients were not always aware of the role of sunlight in the development of their eruption and the clinical features were not always typical of a photodermatitis.

Aged↗
PubMed1986

Contact and photocontact allergy to musk ambrette.

Musk ambrette, a contact and photocontact allergen, is a synthetic fragrance present in aftershave lotions and many toiletries. Thirty-four patients with contact and photocontact allergy to musk ambrette were studied. All had a facial eczema. Four distinctive clinical pictures were seen. These were plaques of eczema, jawline (mandibular) dermatitis, acute contact dermatitis and chronic actinic dermatitis. Twenty-six patients were light sensitive by history and 10 were diagnosed by clinical criteria as having chronic actinic dermatitis. Patch and photopatch testing to musk ambrette showed that seven patients had pure photocontact dermatitis to musk ambrette. Eight patients had contact dermatitis to musk ambrette but this was exacerbated by irradiation. Cross reaction with moskene occurred. Scrupulous avoidance of musk ambrette has resulted in clinical resolution in most patients.

Acute Disease↗
PubMed1990

Immediate contact reactions to chemicals in the fragrance mix and a study of the quenching action of eugenol.

In this study, the nature of non-immune immediate contact reactions (NIICR) produced by cinnamic aldehyde, benzoic acid and sorbic acid were investigated, with particular interest in the 'quenching' ability of eugenol. Three groups of human subjects were studied, and the guinea-pig ear was also used as a model of NIICR. Cinnamic aldehyde, benzoic acid and sorbic acid were all able to produce NIICR in the majority of subjects studied. There was a strong correlation between the susceptibility of each subject to each urticant, but no correlation between the susceptibility to NIICR and age, atopic status or tanning ability. Eugenol caused a reduction in NIICR induced by all three urticants. This 'quenching' effect was apparent even when the eugenol was applied up to 60 min prior to application of cinnamic aldehyde, and its effect was not eliminated by washing. In the guinea-pig-ear model, ear thickening was induced by all three urticants, and this response was inhibited by eugenol.

Acrolein↗
PubMed2003

The frequency of fragrance allergy in patch-tested patients increases with their age.

BACKGROUND: The most likely age of sensitization to fragrance chemicals is unknown. OBJECTIVES: To investigate the frequency of allergy to the 8% fragrance mix (FM) in each decade of life in patients undergoing patch testing for the investigation of skin symptoms. METHODS: Patients (n = 23 846; 14 104 female and 9742 male) underwent patch testing to a standard series between 1 January 1984 and 31 December 1998. All data were recorded on a computerized database. RESULTS: We found that 8.4% of females and 6.4% of males were allergic to the FM. The frequency of fragrance allergy was low in the first two decades of life (2.5-3.4%). It gradually increased in females after the age of 20 years to peak in the 60s at 14.4% of those tested, with a decline to 11.6% in the 80s. The prevalence in males rose more slowly and peaked at 13.7% in the 70s, declining to 10.8% in the 80s. The youngest patients sensitized were aged 2 years. CONCLUSIONS: These findings support the hypothesis that allergy to fragrance results from a combination of repeated environmental exposure and age-related susceptibility factors.

Adolescent↗
PubMed2006

Simultaneous sensitivity to fragrances.

BACKGROUND: Cinnamal/cinnamic alcohol and isoeugenol/eugenol are pairs of related fragrance chemicals found in Fragrance Mix I (FM I), and thus are routinely tested in combination with other fragrances in the European standard patch test series. Their close structural similarity makes the occurrence of simultaneous sensitivity within these chemical pairs likely, although at present there are no robust data to support this hypothesis. OBJECTIVES: To establish the frequency of simultaneous reactions to these fragrance chemicals in patients with suspected fragrance allergy attending a contact dermatitis clinic; to provide evidence in support of proposed metabolic pathways; and to determine whether including all four separately in FM I is necessary to avoid missing a diagnosis of fragrance allergy. METHODS: We analysed retrospectively the records of patients patch tested to the European standard series during the 15-year period 1984-98 for positive reactions to FM I. In a subset of patients tested to the constituents of FM I, positive reactions to cinnamal, cinnamic alcohol, isoeugenol and eugenol were sought. Data were analysed using 2x2 contingency tables (Fisher's exact test). RESULTS: During this period, 23,660 patients were tested to the European standard series, of whom 1811 (7.7%) had positive reactions to FM I. Of the 1112 patients tested to the constituents of FM I, 934 had positive reactions to at least one constituent (total 1324 positive reactions to constituents). Of these 934, 826 also had positive reactions to FM I itself; 108 were negative to FM I but reacted to one or more of its constituents. One hundred and seventy-eight patients did not react to any of the breakdown constituents of FM I; 34 of these had positive reactions to FM I itself. Of 139 patients allergic to cinnamic alcohol, 87 were also allergic to cinnamal (63%), compared with 108 (11.1%) of 973 cinnamic alcohol-negative patients (P<0.00001). Of 231 patients allergic to isoeugenol, 50 were also allergic to eugenol (22%), vs. 109 (12.4%) of 881 isoeugenol-negative patients (P=0.0002). CONCLUSIONS: These data support in vitro experiments indicating that cinnamal and cinnamic alcohol may generate a common hapten and are consistent with the view that simultaneous sensitization to isoeugenol and eugenol occurs to a limited extent, despite their being metabolized via different pathways. In view of the substantial number of isolated reactions to each of these fragrance chemicals, all four should continue to be included separately as constituents of FM I.

Acrolein↗
PubMed2005

Contact dermatoses in healthcare workers: reduction in type I latex allergy in a UK centre.

Natural rubber latex (NRL) allergy has been recognized as a public health concern. NRL allergy frequently occurs in healthcare professionals. In this retrospective study we report the changing frequency of Type I NRL allergy amongst healthcare workers suffering from hand dermatitis referred to our department between 1996 and 2003. We identified 224 healthcare workers from the patch test database with a diagnosis of hand dermatitis who had undergone NRL skin prick testing (SPT). We report the SPT results, patch test results and diagnoses for each individual. The percentage of positive SPT to NRL in healthcare workers decreased from 62% in 1996 to 10% in 2003. Type IV allergy to fragrance mix (13%) was the most frequent cause of allergic contact dermatitis. Thiuram mix (8%) and carba mix (4%) were the most frequent indicators of type IV allergy to chemicals in rubber gloves. Fragrance allergy was the most frequent type IV allergen found in healthcare workers with hand dermatitis. We conclude that hand care preparations free from fragrance allergens should be available in all areas of clinical work.

Dermatitis, Occupational↗
PubMed2004

Contact dermatitis to cosmetics, fragrances, and botanicals.

Cosmetics, fragrances, and botanicals are important causes of allergic contact dermatitis. Identifying and avoiding the causative allergens can pose a challenge to both the patient and the dermatologist. The site of involvement can give the investigator clues to the cause of the eruption in many cases. Fragrances and preservatives are the two most clinically relevant allergens in cosmetics. Botanicals are being added to cosmetics because of consumer demand and are now being recognized as sources of allergy as well. Patch testing allows for the detection of allergens that are potentially relevant in the genesis of the patient's eczema. Common skin-care product allergens, including fragrances and botanicals as well as those found in sunscreen, nail, and hair-care products, are reviewed. Practical methods of allergen avoidance are also discussed.

Allergens↗
PubMed2006

Strong allergic patch test reactions may indicate a general disposition for contact allergy.

BACKGROUND: Patch test patients have two or more positive reactions to unrelated allergens more often than to be expected by chance. This study evaluates synchronous patch test reactions to test the hypothesis that in such cases an allergen-independent disposition for contact sensitization may be involved. METHODS: Data of 87 834 patients tested with a standard patch test series in 42 centers of a Central European Network were retrospectively evaluated. Analyses were done for synchronous positive reactions of graded strength to nickel sulfate, fragrance mix, and to those five allergens that followed in frequency of positive results. All seven allergens selected were not related by chemical structure or exposure. Descriptive univariate and bivariate analyses as well as a polytomous logistic regression analysis were performed. Odds ratios with 95% confidence intervals were calculated. RESULTS: With an increasing strength of a positive reaction to nickel or to fragrance mix the likelihood of further positive reactions to unrelated contact allergens increased significantly, and the mean strength of such additional reactions raised steadily with an increasing strength of a nickel or fragrance reaction. CONCLUSIONS: Our findings support the idea that patients who respond with a strong patch test reaction may have a particular general disposition to acquire contact sensitivity to additional unrelated allergens. They should therefore not only be advised to avoid their known allergen but in addition to minimize exposure other contact allergens.

Adolescent↗