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Image Number 617 (Plant contact dermatitis)

 
Morphology:
Blisters

Diagnosis: Plant contact dermatitis

Site: Arm,forearm

Sex: F

Age: 30

Type: Clinical and Histology

Description: Flacid blisters on forearm

Submitted by: Ian McColl

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Differential Diagnosis

History: 30 years old female who contracted this rash overnight having worked in the garden the day before in a top and shorts.The rash was only on the outer aspect of her forearm and the inner aspect of the right thigh. The rash and distribution suggested a plant contact dermatitis.Sometimes if the sap drips and runs on the skin the rash may be in a linear distribution and may show marked hyperpigmentation if the sap containing furocoumarins interacts with sunlight giving a phytophoto reaction.

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