Juvenile dermatomyositis with joint contractures and calcinosis cutis

A 12-year-old boy presented to our department with firm papules on the fingers of both hands, erythematous scaly plaques on the dorsum of the hands and elbow, and deformities and limitation of motion in the joints of the hands and feet. His parents reported that the eruption started 6 years prior to presentation. He was previously diagnosed with psoriasis by physicians and acitretin treatment was given. However, he did not benefit from the treatment.