Like many mental diseases, there is no single, specific reason that anxiety attack symptoms happen.
However, most scientists believe that they can be caused by a combination of faulty brain chemistry, illogical thinking, and stressful situations.
Here, are some of the most common theories of why anxiety attacks occur.
Please, note though that this list is not complete.
But, these are the most common reasons why this condition may happen.

1. Alarm System Malfunction- It has been theorized that anxiety attacks are the result of your bodies normal "alarm system" malfunctioning.
   It is normal for your body to react when a dangerous or an extremely stressful situation happens.
   However, sufferers normal alarm system will tend to over react.
   
2. Genetics- Panic attacks have been shown to be prevalent in some families.
   So, family genetics could be a factor in why some people may be more likely to have an attack.
   
3. Chemical Imbalance- Panic attacks have been shown to be caused by a brain chemistry imbalance.
   Studies have shown that people who have a lack of zinc or magnesium may be more likely to suffer from attacks..
   
4. Societal Factors- Certain oppressed minorities are more likely to suffer from an anxiety attack.
   It has been theorized that the reason for this is that the reason for this is based upon how minorities deal with extreme stressful situation.
   
5. Anxiety Sensitivity- Individuals who suffer from panic attack symptoms tend to also suffer from "Anxiety Sensitivity.
   " A person that has a problem with "Anxiety Sensitivity" tends to overreact when they encounter any type of anxiety attack symptoms.
   For example, if you suffer from chest pains you will think you are having a heart attack and/or your heart will stop.
   
6. Trauma- People who are victims of sexual or physical abuse are more likely to develop panic attacks.
   
7. Physical Disorders- Panic attacks have been shown to be initially triggered by a physical illness or the medicines that one may take as a result of the physical illness.
   

Not being able to exactly pinpoint the causes of your panic attack symptoms is quite disconcerting.
But, anxiety attacks can be treated.
Natural methods, psychotherapy, or pharmaceuticals can help you deal with your anxiety disorder.
So, just because you may not be sure why you suffer from anxiety attack symptoms does not mean you should give up.
So, you need to get treatment.
You do not have to suffer!