Occupational allergic contact dermatitis caused by decorative plants

Area of Science:

• Dermatology
• Occupational Health
• Botany

Background:

• Occupational allergic contact dermatitis (OACD) is a significant concern in professions involving plant handling.
• Decorative plants, while aesthetically pleasing, can harbor allergens causing OACD.
• Previous studies have identified various plant species implicated in OACD.

Purpose of the Study:

• To investigate the prevalence and causative agents of OACD linked to decorative plants.
• To identify specific plant families and chemical allergens responsible for OACD in diagnosed cases.
• To assess the long-term impact of OACD on affected individuals' careers.

Main Methods:

• Retrospective analysis of 12 diagnosed cases of OACD over 14 years.
• Identification of causative plant families and species through patient history and clinical presentation.
• Review of known chemical allergens associated with implicated plant families.

Main Results:

• Twelve cases of OACD were diagnosed, primarily in middle-aged individuals with an average exposure of 13 years.
• Compositae (chrysanthemum, gerbera) and Alstroemeriaceae (Alstroemeria) were the most frequent plant families involved.
• Tuliposide-A and sesquiterpene lactones (alantolactones, parthenolide) were identified as key chemical allergens.

Conclusions:

• Decorative plants, particularly from Compositae and Alstroemeriaceae families, are significant causes of OACD.
• Prompt diagnosis using plant allergen extracts is crucial for managing OACD.
• A considerable proportion of affected individuals (5 out of 12) were unable to continue their work due to severe OACD relapses.