Don't be afraid of asking for help （）it is needed.

A．unless

B．since

C．although

D．when

患者女，34岁，2个月前受凉后出现四肢关节疼痛，游走不定，关节屈伸不利，起病之初曾有恶风、发热，纳可，二便调，舌淡红，苔薄白，脉浮紧。应诊断为（）.

A.痛痹

B.行痹

C.着痹

D.热痹

E.中风