Adrenal fatigue isn't an accepted medical diagnosis. It is a lay term applied to a collection of nonspecific symptoms, such as body aches, fatigue, nervousness, sleep disturbances and digestive problems.
Your adrenal glands produce a variety of hormones that are essential to life. The medical term "adrenal insufficiency" refers to inadequate production of one or more of these hormones as a result of an underlying disease or surgery.
顯然：Adrenal fatigue ～Adrenal insufficiency～inadequate production of one or more of these hormones ～variety of symptoms (疲勞, 身體酸痛, 體重減輕, 低血壓, 頭昏眼花, 脫發, 皮膚變色（色素沉著）, …… ).
人家說的很清楚，Adrenal fatigue 是腎上腺激素（一種或多種）分泌不足引發的一係列症狀。
可以對比一下，雖然都有一個“腎”字，症狀有部分重疊，但 Adrenal Insufficiency 與中醫的腎虛不是一個概念。除此之外，請注意概念定義的清晰程度。
Kai2002: 中醫的腎包括生殖係統，骨骼骨髓關節脊髓大腦耳朵，虛就是這些地方能量消耗過多，功能受影響。人的腎都是最先衰的，然後人就老了。
