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Image Number 588 (Dermatographism)

 
Morphology:
Swelling

Diagnosis: Dermatographism

Site: Arm,forearm

Sex: F

Age: 18

Type: Clinical

Description: Whealing induced by stroking of skin

Submitted by: Shahbaz Janjua

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Differential Diagnosis

History: Dermatographism is an exaggerated response to constituitional whealing tendency following  stroking or scratching of skin.  It is the most common form of physical urticaria occuring in 5% of the population.  It can occur with other forms of urticarias.  Symptoms can be aggravated by heat, minor pressure, exercise, stress, and emotion.

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