1/5. Patch test sensitization to Compositae mix, sesquiterpene-lactone mix, Compositae extracts, laurel leaf, Chlorophorin, Mansonone A, and dimethoxydalbergione.BACKGROUND: Compositae mix and sesquiterpene-lactone (SL) mix are important patch test substances to show allergic contact dermatitis from various Compositae plants. OBJECTIVES: The aims of this study are to calculate the sensitization rates to Compositae mix and SL mix in an occupational dermatology clinic and to describe cases of active sensitization caused by patch testing with Compositae mix and SL mix. methods: Conventional patch testing was performed. SL mix (0.1%) and Compositae mix (6% in petrolatum) were tested in a modified European standard series and a plant allergen series. Testing with other appropriate patch test series was also performed. RESULTS: SL mix provoked 8 allergic patch test reactions (0.7%) in 1,076 patients, whereas Compositae mix was positive in 15 of 346 patients (4.2%). Three patients were actively sensitized to Compositae mix and 1 patient to SL mix. One patient was also sensitized to other plant allergens in a series of allergenic plant chemicals, namely to Mansonone A, an ortho-quinone; (R)-3,4-dimethoxydalbergione, a quinone; and Chlorophorin, a hydroxy stilbene. Allergic patch test reactions to laurel leaf were caused by cross-sensitization to SLs. CONCLUSION: Compositae mix seems to be a more important patch test substance than SL mix to detect allergic contact dermatitis to Compositae plants, but patch testing may sensitize. The concentration of the individual components of the Compositae mix should be adjusted so that the mix detects allergic patients but does not sensitize.- - - - - - - - - - ranking = 1keywords = laurel, leaf (Clic here for more details about this article) |
2/5. Airborne contact dermatitis from ambrosia deltoidea (triangle-leaf bursage).3 cases of contact dermatitis due to exposure to airborne allergens from ambrosia deltoidea (triangle-leaf bursage) are presented. Although airborne plant dermatitis was suggested in each case by a history of aggravation of the rash by outdoor exposure and typical skin lesions, patch testing with an oleoresinous extract of A. deltoidea leaves identified the source of the sensitizer, not previously reported. As A. deltoidea is a ragweed that probably contains sesquiterpene lactones nearly identical to those of ragweeds widely prevalent in most of north america, the patients presented indicate the need for commercially available, standardized, plant extracts for patch testing in this country. The finding of positive patch tests with filters from an air sampler placed in 1 patient's domestic environment suggests a new avenue of investigation in airborne contact dermatitis.- - - - - - - - - - ranking = 0.010973240417801keywords = leaf (Clic here for more details about this article) |
3/5. Occupational contact dermatitis to hydrangea.Two female commercial hydrangea growers, from separate nurseries, presented with similar hand and facial dermatitis. Both had a hand dermatitis affecting particularly the first three fingers and backs of both hands and complained of a recurrent facial dermatitis affecting the forehead, around both the eyes and bridge of nose. They related their dermatitis to their work. patch tests confirmed allergy to all components of hydrangeas including petal, leaf and stem. Avoidance resulted in resolution of their dermatoses. Allergy to hydrangeas has been reported previously although infrequently.- - - - - - - - - - ranking = 0.0021946480835602keywords = leaf (Clic here for more details about this article) |
4/5. Allergic contact dermatitis induced by rosemary leaf extract in a cleansing gel.We report a rare case of allergic contact dermatitis due to an extract of rosemary (rosmarinus officinalis). A 23-year-old woman had begun to notice itchy erythema on her face around one month before presentation. She used various cosmetics and a cleansing gel containing rosemary leaf extract. From the patch test results, she reacted positively to the cleansing gel (1% in distilled water) and the rosemary leaf extract (0.1% in distilled water), one of its ingredients.- - - - - - - - - - ranking = 0.013167888501361keywords = leaf (Clic here for more details about this article) |
5/5. Mango dermatitis: allergic contact dermatitis to mangifera indica.Mango dermatitis' is the common term given to allergic contact dermatitis to the sap or skin of the fruit of mangifera indica. Four patients presented with urticaria and eczematous rash following exposure to mangoes or the trees. Patch testing with diluted sap, crushed leaf, crushed stem and fruit skin was strongly positive.- - - - - - - - - - ranking = 0.0021946480835602keywords = leaf (Clic here for more details about this article) |