First, read the English article below.

People with panic disorder have sudden and repeated attacks of fear that last for several minutes, up to an hour, but rarely over that, because the body simply does not physically have enough energy to panic for that long.   Panic attacks are characterized by a fear of disaster or of losing control even when there is no real danger. A panic attack can occur without warning and for no obvious reason. In extreme cases, the symptoms may be accompanied by an acute fear of dying. Although they are quite distressing and can last from 5 minutes to somewhere over an hour, panic attacks are not life-threatening on their own.  Panic attacks arouse the body to a peak level of excitement which makes the individual feel not in control of themself. The mind is preparing for a false fight or flight mode, forcing the body to take over to help the victim face or run from the perceived danger, real or not.  The hormones cortisol and adrenaline are released from the adrenal glands into the bloodstream, and the process begins -- this forms the heart of a panic attack. The mind cannot distinguish the difference between a real danger from the one that is in your mind. If you believe it, then it is real as far as your mind is concerned. They may act as if their life is in danger, and they feel like it is. Try to put it in perspective; if someone was holding a knife to your throat and saying "I'm going to slit your throat. But I'm going to wait and keep you guessing when I'll decide to do it. It could be any time now." There has never been a recorded instance of a person dying of a panic attack. They can only be fatal if accompanied by pre-existing medical conditions, such as asthma, or if extreme behaviors subsequently result (like jumping out of a window). If the person has never experienced a panic attack before, they'll be panicking on two different levels -- the second for not knowing what's going on. If you can pinpoint that they're going through a panic attack, this alleviates half the problem. Symptoms include:  ... 

Now, please write a short abstract for it in Vietnamese. Abstract:
Hiểu những gì mà họ đang trải qua. Theo dõi các triệu chứng. Nếu đây là lần đầu tiên bệnh nhân lên cơn hoảng loạn, bạn hãy gọi cấp cứu ngay. Tìm nguyên nhân dẫn đến cơn hoảng loạn.