In my case, it's been low motivation (I don't care), always tired, brain-fog, difficulty concentrating, social anxiety, depression, etc... I knew something wasn't right with me (and close friends & family knew too), but I just couldn't put my finger on it (or didn't want to from an addict perspective).
以我情况而言,sy导致的是缺少动力(我对世事已不关心),经常觉得疲劳,大脑模糊,缺乏专注力,社会焦虑,忧郁症,等等...我知道这样绝对是不正常的(我的好朋友,和家庭都知道)但是我就是停不下来(又或者是由于上瘾而不想停)。