title: Allergic contact dermatitis from Dittrichia viscosa (L.) Greuter.
abstract: 9 cases of contact sensitivity to Dittrichia viscosa, mainly with an airborne pattern, are described. All patients reacted to the fresh leaf of the plant and to its ethereal extracts at 1 and 0.5% pet., and some of them also to that at 0.1% pet. Positive reactions to Frullania dilatata, Laurus nobilis, some other members of the Compositae, and helenin were observed, suggesting the diagnosis of a sesquiterpene-lactone-induced allergic contact dermatitis.
authors.affiliation: Clinica de Dermatologia, Hospital da Universidade, Coimbra, Portugal.
authors.forename: M
authors.initials: M
authors.lastname: Gonçalo
authors.forename: S
authors.initials: S
authors.lastname: Gonçalo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003877:Dermatitis, Contact / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010328:Patch Tests; D010944:Plants / Q000032:analysis; D011174:Portugal; D012717:Sesquiterpenes / Q000009:adverse effects / Q000032:analysis
chemical_list: D012717:Sesquiterpenes