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Bo Ljunggren, MD

Arch Dermatol. 1990;126(10):1334-1336.

Abstract
• A 65-year-old woman developed a severe, generalized phototoxic reaction following a visit to a suntan parlor. History taking revealed that she had consumed a large quantity of celery root (Apium graveolens) 1 hour earlier. With the use of thin-layer chromatography, methoxsalen (8-methoxypsoralen) and 5-methoxypsoralen were identified in the extract from a similar celery root. The biologic activity of this extract, as evaluated with the semiquantitative Candida albicans inhibition technique, indicated a total psoralen dose of approximately 45 mg. Substantial amounts of psoralen may be absorbed from vegetables, such as celery, and under unusual circumstances, this may constitute a health hazard.

(Arch Dermatol. 1990;126:1334-1336)

Author Affiliations
From the Department of Dermatology, Lund University, Malmö (Sweden) General Hospital.

Footnotes
Accepted for publication May 9,1990.

Reprint requests to the Department of Dermatology, University of Lund, Malmö General Hospital, S-214 01 Malmö, Sweden (Dr Ljunggren).

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