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Image Number 255 (Subacute lupus erythematosus)

 
Morphology:
Red,scaly

Diagnosis: Subacute lupus erythematosus

Site: Back

Sex: M

Age: 67

Type: Clinical

Description: Red scaly psoriasiform rash

Submitted by: Ian McColl

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Differential Diagnosis

History:

The lesions of subacute lupus erythematosus can be very psoriasiform as is shown in this case.It can be difficult to differentiate this type clinically from discoid lupus erythematosus.This patient was photosensitive and Ro Ab positive.In contrast to discoid lupus these lesions usually clear with minimal scarring.

Occasionally lesions such as these in a white skin individual are mistaken for superficial basal cell skin cancers.Subacute lupus responds well to antimalarials such as hydroxychloroquine.



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