Dermatomyositis

Case contributed by Jeremy Jones
Diagnosis almost certain

Presentation

Rash over trunk and thighs and generalized lower limb weakness.

Patient Data

Age: 14 years
Gender: Male
mri

Extensive, bilateral, hip girdle and thigh muscle abnormality with linear T2 hyperintensity and features of muscle edema.  The calf muscles are relatively spared, although incompletely imaged.

Case Discussion

There is myositis affecting the hip girdle and thigh muscles and with a history of a rash, dermatomyositis is the diagnosis.

Significant improvement in clinical features following pulsed steroids.

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