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November 1978

`An Experiment in Nature'

Author Affiliations

Sun City, Ariz

Arch Dermatol. 1978;114(11):1715. doi:10.1001/archderm.1978.01640230085027

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To the Editor.—  I recently saw an "experiment in nature" that confirmed the phototoxic potential of the sunscreen padimate A, as reported by Kaidbey and Kligman in the April 1978 issue of the Archives (114:547-549).Recently, one of my patients, a 62-year-old avid golfer with a history of several skin cancers, appeared for a routine examination with a marked erythema of the head, neck, and dorsum of the left arm compatible with a sunburn. This was surprising, as he has been a scrupulous and conscientious user of sunscreens. He stated that the burn developed after golfing, despite protection with Pabafilm, a padimate A sunscreen.The patient cannot apply sunscreen to his right arm, due to a paralysis of the left arm from an old stroke (he golfs only with his right arm). The right arm therefore received no sunscreen and yet, paradoxically, was the only sun-exposed area that failed to

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