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Phytophotodermatitis from celery among grocery store workers.

P J Seligman1, C G Mathias, M A O'Malley

  • 1Division of Surveillance, Hazards Evaluations and Field Studies, National Institute for Occupational Safety and Health, Cincinnati, OH 45226.

Archives of Dermatology
|November 1, 1987
PubMed
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Grocery workers experienced phytophotodermatitis, a skin reaction, linked to handling celery. Risk factors included sun exposure and tanning beds, with celery

Area of Science:

  • Dermatology
  • Epidemiology
  • Food Science

Background:

  • Phytophotodermatitis is a skin reaction caused by contact with certain plants followed by UV light exposure.
  • Occupational exposure in grocery store settings presents a unique scenario for investigating plant-related dermatoses.

Purpose of the Study:

  • To investigate an outbreak of phytophotodermatitis among grocery store employees.
  • To identify risk factors and the causative agent, specifically focusing on celery.

Main Methods:

  • Conducted a cross-sectional epidemiological investigation in two Oregon grocery stores.
  • Collected produce samples for psoralen level analysis.
  • Performed cutaneous provocation tests with celery samples.

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Main Results:

  • Identified 19 cases of phytophotodermatitis, all linked to one store during a celery sale.
  • Elevated psoralen levels were found in celery samples from the affected store.
  • Tanning salon use and frequent celery handling were identified as significant risk factors.

Conclusions:

  • Celery, even when appearing healthy, can cause phytophotodermatitis in grocery workers.
  • The condition results from a combination of psoralen content in celery, UV exposure (including tanning beds), and handling frequency.