[Occupational allergy caused by ornamental plants].

The problem of allergy to decorative plants is still poorly known. Reports on occupational allergy to flowers are scarce and usually concern gardeners, greenhouse workers and florists. The handling, smelling and caring of flowers may cause rhinoconjunctivitis, asthma, urticaria and also contact dermatitis. Plants of the Compositae family that includes many different species have been frequently described. Chrysanthemum flowers, the strongest sensitizer among ornamental Compositae plants, especially contribute to the development of contact dermatitis. Allergy to Liliaceae, mostly to tulips, hyacinths, lilies and crocuses has quite often been reported as well as sensitization to rose pollen in rose planters. Occupational sensitization to flowers of other families, among which spathe flowers, primulas, weeping fig or Stephanotis floribunda should be mentioned, is less frequent. Exposure to ornamental flowers is common in the general population. Persons occupationally involved in cultivation of flowers and who demonstrate allergic symptoms are often forced to change their jobs. Candidates to these occupations with diagnosed atopy should be informed about the risk of developing allergy to flowers, which could make them unable to perform the job.