[Juvenile dermatomyositis: 4 case studies].

Juvenile dermatomyositis is a rare disease. The estimated incidence is 2 to 3 cases per million population. Before the use of corticosteroids, prognosis was poor for most patients. Today, despite a better prognosis, the side effects of long-term treatment still burden the outcome of the disease. The diagnosis of this entity is difficult and often delayed due to its rarity. It has been shown that the delay in diagnosis and care is a major factor for poor prognosis. Cutaneous findings are often inaugural, allowing early diagnosis. This study's aim was to share our 10-year experience with juvenile dermatomyositis.