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Image Number 2195 (Dermatographism)

 
Morphology:
Wheal

Diagnosis: Dermatographism

Site: Arm,forearm

Sex: M

Age: 25

Type:

Description: Linear wheals.

Submitted by: Nameer Al-Sudany

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Differential Diagnosis

History:

This man suffered itchy whealing of skin on friction, rubbing or stroking. The wheals last about 15-20 minutes and disappear. The presented photo shows classical linear wheals induced at consultation room by a blunt object. 



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