Dropped Head Sign as the Only Symptom of Myasthenia Gravis

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概要

• 論文の詳細を見る

• Neck extensor muscle weakness and the dropped head sign are associated with various neuromuscular disorders. However, these symptoms are comparatively rare in myasthenia gravis (MG). We report a MG case that presented with dropped head sign as the main symptom. A 55-year-old man developed subacute weakness of the neck extensor muscle and presented with dropped head. We established a diagnosis of MG based on the results of an edrophonium test and a voluntary single fiber electromyogram (vSFEMG), and a high serum antiacetylcholine receptor antibody level. This patient was treated with pyridostigmine and his neurological symptoms improved. There are reported cases of dropped head sign as the first symptom of MG, however, in those cases, other muscles showed weakness during the first few months after onset. In the present case, throughout the clinical course no other symptoms outside of dropped head sign were seen.

• 社団法人 日本内科学会の論文

著者

• Honma Sanae

  Neurology, Hokuyukai Neurology Hospital

• Yaguchi Hiroaki

  Neurology, Kushiro Rousai Hospital

• Takei Asako

  Neurology, Hokuyukai Neurology Hospital

• Yamashita Isao

  Neurology, Hokuyukai Neurology Hospital

• Doi Shizuki

  Minami-ku Neurology, Sapporo Minami Hospital

• Hamada Takeshi

  Neurology, Hokuyukai Neurology Hospital

関連論文

• Dropped Head Sign as the Only Symptom of Myasthenia Gravis

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