5 歲男童早上醒來後,發覺他兩腳無法走路,急診檢查時發現體溫為38.5℃且血清中Creatine kinase(CK)比正常值高20 倍,下列何種疾病為最有可能之診斷?
Acute myositis
Acute transverse myelitis
Myasthenia gravis
Guillian-Barré syndrome