病历摘要：患者男性，26岁，半夜起床时感双下肢乏力，今晨四肢乏力，不能起床伴轻度头痛，无头晕、恶心呕吐。二周前鼻塞、发热；病前大量饮酒史。查体：神志清楚，对答切题，颅神经检查（-），肌张力低，肌力Ⅱ级，腱反射迟钝，病理征（-），脑膜刺激征（-）。
关于Guillain-barre综合征，下列哪些是错误的（）
A.病因不清，可能与感染及免疫机制有关
B.对称性弛缓性瘫痪，远端常较近端明显
C.常合并末梢型感觉异常
D.Fisher综合征被认为是GBS变异型，表现为双侧面瘫、呼吸无力、腱反射消失
E.颅神经损害以双侧面瘫最常见
F.急性运动轴索型神经病是GBS变异型，病残率高，预后差
G.皮质类固醇效果明确，是最主要的治疗药物
H.脑脊液蛋白细胞分离是GBS特征性表现，多出现于病后2-3周，其出现的越早，提示其预后越差
参考答案：B, D
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