Letter to the Editor
Phytophotodermatitis Due to Puncture from Lime Tree Thorn
Abstract
To the Editor:
Phytophotodermatitis is a cutaneous phototoxic inflammatory eruption due to exposure to light-sensitizing botanical substances and long-wave ultraviolet radiation that usually begins approximately 24 hours after exposure and peaks at 48 to 72 hours.1 The primary skin lesions of phytophotodermatitis may range from delayed erythema (24–48 h) to a frankly nodular eruption. The photosensitizing compounds in the plants are furocoumarins. The phototoxic reaction is entirely independent of the immune system; thus, prior sensitization or an intact immune system is not required. The clinical history is essential in establishing the diagnosis of phytophotodermatitis.
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