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At least 271 records · Page 15Linked to original sources
PubMed1978

Alantolactone sensitivity in chrysanthemum contact dermatitis.

A case of occupational chrysanthemum contact dermatitis is reported. Patch tests showed the patient to be sensitized to Chrysanthemum morifolium (Chr M) leaves, flowers, and stems (alcoholic extracts) and to alantolactone. An attempt at desensitization appears to have been successful. Gas chromatography indicated the presence of alantolactone in all the various parts of Chr M, mostly in the flowers. The "maximization test" succeeded in sensitizing guinea pigs to alantolactone.

Adult↗
PubMed1987

Contact dermatitis in Nigeria (i). Hand dermatitis in women.

Of 545 consecutive contact dermatitis clinic patients, 271 (49.7%) were women, 29 (10.7%) of whom had hand dermatitis alone. 17 (58.6%) of these hand cases were allergic, the main sensitizers being nickel and essential oils in oranges. Dress makers were mostly affected by nickel, while orange sellers and peelers were positive to orange peel, fragrance mix, balsam of Peru and formaldehyde in varying combinations. 8 (27.6%) of the hand cases were due to irritants and wet jobs, and possibly to allergens not tested. 24 (83%) of the hand cases were occupational. Only 1 Nigerian woman had true housewife's hand dermatitis. It was not possible to define the rôle of atopy because of unreliable histories. 2 cases of pompholyx and a negative patch test occurred in the first trimester of pregnancy.

Adolescent↗
PubMed1997

Contact dermatitis to multiple exotic woods.

Occupational contact dermatitis to individual wood species from foreign countries, such as Asia, Africa, Central America, and South America, has been described. This report concerns the case of a domestic woodworker who developed allergic contact dermatitis shortly after beginning to work with multiple exotic woods. Patch testing with domestic and exotic wood fresh sawdust samples, 1% and 10% in petrolatum, yielded strong positive reactions to six exotic woods: zericote, pao ferro, cocobolo, becote, macassar ebony, and padauk. Later testing confirmed sensitivity to the allergenic quinonoid constituents in pao ferro (R-3,4-dimethoxydalbergione), cocobolo (obtusaquinone), and macassar ebony (macassar quinone).

Dermatitis, Allergic Contact↗
PubMed1977

Allergic contact dermatitis from topical fluorouracil.

An allergic contact dermatitis from fluorouracil developed in two patients 8 and 18 days respectively after institution of topical fluorouracil therapy. The character of the usual irritant dermatitis changed to that of an allergic dermatitis. Epicutaneous patch tests and intradermal tests with fluorourcil were reactive. Histologic specimens of positive test sites revealed the changes expected in allergic contact dermatitis. Twelve control subjects failed to react to intradermal fluorouracil tests.

Administration, Topical↗
PubMed2004

An 8-year experience in airborne contact dermatitis.

OBJECTIVE: A large number of case reports concerning occupational airborne contact dermatitis have been published in the last few years. Our purpose was to establish the prevalence of airborne contact dermatitis in a routinely patch-tested population and to obtain further epidemiologic data. METHODS: In a single-center study, the data of 5,092 routinely patch-tested patients were collected using a standardized questionnaire and a documentation form. The study period extended from October 1994 to March 2002. RESULTS: The clinical diagnosis was airborne contact dermatitis in 15 cases (0.29%). Patch testing revealed positive and relevant results in nine patients (0.18%). Plant or wood extracts were the sensitizers in all cases but two, and perfume and epoxy resin were the sensitizers in one case each. The diagnosis of an irritant airborne contact dermatitis was established in six patients. A relationship with occupation was found in seven cases (0.14%) when 'housewife' was included as an occupational category and in five cases (0.1%) when this was excluded. CONCLUSION: Airborne contact dermatitis is a rare diagnosis in an unselected patch-test population. An occupational relationship was less common than has been implied in case reports in recent years.

Adolescent↗
PubMed1986

Contact dermatitis in printing tradesmen.

During a 2-year period in Toronto, Canada, 21 printing tradesmen with contact dermatitis were evaluated. 67% had allergic contact dermatitis; 29% due to ultraviolet-cured ink components. Irritant contact dermatitis accounted for 37% of the cases. The prognosis in printing tradesmen with contact dermatitis is guarded, except for those with allergic contact dermatitis due to UV-cured components, as the tradesmen who were sensitized to other contactants eventually left the trade. Offset lithography was associated with the problem in 18 of the 21 cases. A brief outline is given of the printing processes in common use.

Dermatitis, Contact↗
PubMed2002

[Allergic contact dermatitis to the Comfeel hydrocolloid dressing].

INTRODUCTION: Allergic contact dermatitis is frequent in patients with chronic leg ulcers. However, it rarely occurs with modern wound dressings and is exceptional with hydrocolloids. CASE REPORT: A 66-year-old woman was treated for a leg ulcer with the Comfeel plus(R) transparent hydrocolloid dressing for two months. She developed a pruriginous, erythematous and vesiculous dermatitis under the hydrocolloid plaques. Patch tests for the Comfeel plus(R) transparent hydrocolloid, the Comfeel plus(R) hydrocolloid, balsam of Peru and epoxy resin were positive. Only the positive test for the Comfeel plus(R) transparent hydrocolloid was clinically pertinent. The histological examination of the positive test was suggestive of eczema. DISCUSSION: To our knowledge, allergic contact dermatitis to Comfeel plus(R) hydrocolloid dressings has not been reported. Most previous studies which included systematic patch-testings in patients with leg ulcers showed high sensitization rates for various allergens, but no allergy to hydrocolloids. Only isolated cases of allergic contact dermatitis to another hydrocolloid (Duoderm E(R)) have been reported. Our case report shows that allergic contact dermatitis is a possible side-effect of Comfeel plus(R) hydrocolloid dressings. However, it seems exceptional. Since the patch-tests failed to identify the constituent responsible for this allergy in our observation, comprehensive allergologic investigations should be repeated in further cases.

Aged↗
PubMed2004

Contact dermatitis of the feet: a study of 53 cases.

BACKGROUND: Contact dermatitis of the feet is a common dermatosis that very often makes patients unable to perform daily activities. The differential diagnosis should be made with other dermatoses, such as tinea, atopic dermatitis, psoriasis, dyshidrosis, and nummular eczema. It is clinically difficult to establish a true diagnosis of contact dermatitis, and the results of epicutaneous tests may not be definite. However, studies undertaken to identify the etiologic agent may lead to a cure for patients. OBJECTIVES AND METHODS: The objectives of this study were (1) to verify the frequency of contact dermatitis of the feet among a group of patients seen at a public clinic, (2) to determine the type of contact dermatitis, and (3) to determine the most common sensitizers. We selected only patients with eczematous dermatitis from among 1,027 patients at the clinic, and they were patch tested with the Brazilian series. RESULTS: Of 1,027 patients who submitted to patch tests, 53 (5.2%) presented with dermatosis of the feet. Out of these 53 patients, 37 (70%) had at least one positive patch-test reaction, and the remaining 16 (30%) had negative results. CONCLUSION: The presence of dermatosis on the dorsal region of the foot in the majority of the patients with a positive test result was statistically significant (chi2 = 6.02; p < .05). The compounds that caused positive tests more often were rubber-vulcanizing agents, followed by metals and topical medications. The epicutaneous tests were found to be indispensable for the etiologic diagnosis of contact dermatitis of the feet.

Adolescent↗