臨床症状
Praveen Nandha Kumar Pitchan Velammal1, Sathish Kumar Mani2, Nirumal Khumar2
1Tirunelveli Medical College, Tirunelveli, Tirunelveli, TamilNadu, India.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
まとめ
神経精神症状を呈する巨細胞性動脈炎(GCA)患者は、ステロイド副作用および自己免疫疾患の慎重な評価が必要です。自己免疫性脳炎が疑われるGCA患者は、初期検査が陰性であっても、静脈内免疫グロブリン(IVIG)が有益である可能性があります。
科学分野:
- 神経学; 免疫学; リウマチ学
背景:
- 巨細胞性動脈炎(GCA)は、通常コルチコステロイドで管理される自己免疫性血管炎である。; 長期コルチコステロイド療法は、著明な神経精神合併症を引き起こす可能性がある。; 本症例では、ステロイド減量中に脳症を発症したGCA患者を検討する。
研究 の 目的:
- GCA患者における再発性神経精神症状の困難な症例を記述すること。; 意識変容を伴うGCA患者における自己免疫病因の可能性を探求すること。; 複雑なGCA症例における治療反応の診断的有用性を強調すること。
主な方法:
- 60歳、糖尿病のGCA女性の症例研究。; メチルプレドニゾロンによる初期治療後、脳症を発症した。; 検査には、炎症マーカー、MRI、CSF分析、およびIVIG療法への反応が含まれた。
主要な成果:
- 患者はGCAの症状を呈し、メチルプレドニゾロンで改善したが、ステロイド減量中に脳症および神経精神症状を発症した。; CRPとESRの上昇が認められ、MRIでは神経膠症が示された。尿培養で肺炎桿菌が同定され、当初はUTI誘発性脳症が示唆された。; 自己免疫性脳炎パネルは陰性であったにもかかわらず、IVIG療法により著明な臨床的改善が得られ、自己免疫成分が示唆された。
結論:
- GCAにおける再発性神経精神症状は、診断上の課題をもたらす。; GCA患者で意識変容がある場合、ステロイド誘発性効果および自己免疫プロセスを考慮すべきである。; IVIGへの治療反応は、診断検査が陰性であっても、潜在的な自己免疫病因を示唆する。
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