幼年特发性关节炎的诊断

Diagnosis of juvenile idiopathic arthritis

幼年特发性关节炎(JIA)是指16岁以下儿童持续6周以上原因不明的关节炎,是儿童时期最常见的风湿性疾病。JIA按照国际风湿病学联盟的分类标准分为7个亚型,包括全身型、少关节炎型、多关节炎型类风湿因子(RF)阴性、多关节炎型RF阳性、银屑病性关节炎、附着点炎症相关的关节炎和分类不明的关节炎。应该选择适当的辅助检查与可能引起相似表现的其他原因相鉴别,并且应用适当的工具评价其活动程度,同时要注意并发症的诊断。

Juvenile idiopathic arthritis（JIA）,the most common rheumatologic disease in childhood,is characterized by arthritis beginning before the age of 16 years with symptoms persisting for more than 6 weeks with unknown causes.It was divided into seven subtypes by the International League of Associations for Rheumatology（ILAR）：systemic arthritis,oligoarthritis,polyarthritis rheumatoid factor（RF）negative,polyarthritis RF positive,psoriatic arthritis,enthestis related arthritis（ERA）,and undifferentiated arthritis.The appropriate auxiliary examinations should be chosen to differentiate it carefully from other causes that presented similar manifestations to JIA.Attention should be paid to assess the disease activity,prognosis and treatment outcomes.Meanwhile,complications needs to be watched.