起き立りつ性せい調ちょう節せつ障しょう害がいきりつせいちょうせつしょうがいMeanings1nounorthostatic intolerance; orthostatic dysregulationmedicine›Medical term for a condition where standing up causes symptoms like dizziness, fatigue, or fainting due to poor blood pressure regulation. Often discussed in the context of school-aged children.起き立りつ性せい調ちょう節せつ障しょう