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要約 目的:眼科受診時に開瞼失行が発見され,薬剤性パーキンソン症候群と診断された症例の報告。症例:83歳女性が糖尿病網膜症の精査のため受診した。糖尿病と高血圧の既往があり,3か月前に急性心筋硬塞の発作があった。所見と経過:両眼とも強く閉瞼し,自発的または用手的に開瞼不能であった。視力は左右眼とも光覚弁で,眼圧は右48mmHg,左41mmHgであった。両眼に増殖型糖尿病網膜症,虹彩ルベオーシス,右眼に前房出血があった。開瞼不能の原因として,開瞼失行が疑われた。顔貌が仮面状で動作が緩徐であり,両上肢に静止時の振戦と筋固縮があった。心筋硬塞のあと抗うつ薬としてスルピリド150mg/日を服用中であったため,これによるパーキンソン症候群であると推定された。スルピリドを中止し,A型ボツリヌス毒素を12か所に注射した。その後自発開瞼が可能になり,スルピリド中止から3週後に静止時の振戦と筋固縮が消失した。結論:開瞼失行が薬剤性パーキンソン症候群の主要徴候である可能性があり,全身状態に注意する必要がある。
Abstract. Purpose:To report a case of iatrogenic parkinsonism with apraxia of lid-opening as the outstanding manifestation. Case:An 83-year-old woman was referred to us for evaluation of diabetic retinopa-thy. She had had systemic hypertension and diabetes mellitus. She had an acute attack of cardiac infarction 3 months before. Findings and Clinical Course:Both eyelids were closed and could not be opened either spontaneously or manually. The findings were suggestive of apraxia of lid-opening. Her visual acuity was light perception in either eye. She was diagnosed with proliferative diabetic retinopathy and rubeosis iridis. She showed mask-like face, slow motion and tremor in the upper extremities. She had been receiving sulpiride at the daily dosis of 150mg for depression since her heart attack. Sulpiride was immediately discontinued. She was diagnosed with drug-induced parkinsonism when lid-opening became possible and tremor disappeared 3 weeks later. Conclusion:This case illustrates that apraxia of lid-opening may be the outstanding manifestation of iatrogenic parkinsonism.
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