In the earliest stages, a patient may only experience long-term insomnia, anxiety, deep depression or difficulty getting along with others. They may not be consciously aware of the severity of their condition.
病患最初可能只會有長期失眠、焦慮、深度抑鬱或困擾的人際關係等癥狀，而意識不到病情的嚴重性。