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Image Number 1193 (Urticaria Pigmentosa)

 
Morphology:
Papules,brown

Diagnosis: Urticaria Pigmentosa

Site: Back

Sex: M

Age: 16

Type:

Description: Brownish urticated papules and plaques.

Submitted by: Nameer Al-Sudany

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Differential Diagnosis

History: This adolescent has had multiple brownish-red papules and plaques mainly on the trunk since early childhood. The course of the condition is on and off as some lesions disappear and others emerge. A characteristic finding on examination is that most lesions urticate and become itchy on firm rubbing of the lesions i.e. positive Darier's sign.

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