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Torticollis, also known as wry neck or loxia,〔Not be confused with the genus Loxia covering those bird species known as "crossbills", which was assigned by Swiss naturalist Conrad Gesner because of the obvious similarities.〕 is a dystonic condition defined by an abnormal, asymmetrical head or neck position, which may be due to a variety of causes. The term ''torticollis'' is derived from the Latin words ''tortus'' for twisted and ''collum'' for neck. ==Signs and symptoms== Torticollis is a fixed or dynamic tilt, rotation, or flexion of the head and/or neck. The type of torticollis can be described depending on the positions of head and neck.〔 *laterocollis : the head is tipped toward the shoulder *rotational torticollis : the head rotates along the longitudal axis *anterocollis : forward flexion of the head and neck *retrocollis : hyperextension of head and neck backward A combination of these movements may often be observed. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Torticollis」の詳細全文を読む スポンサード リンク
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