so what is the trigger factors of anxiety?

Enviromental or external factors,Medical factors,Subtance use and abuse,genetics,brain chemistry is said to be the trigger factors of anxiety.

1)Enviromental and external factors

    There are certain type of enviromental factors that had been known to be the causes of anxiety it include:
     a) Stress in personal relationship,marriage,friendship..etc
     b) stress at work
     c)stress at school
     d)stress about finances and money

2)Medical factors
     
     some medical factors that causes anxiety is:
 
     a)stress from a serious medical ilness
     b)side effect of medication
     c)symptoms of medical illness

3)Genetics

   A family history may increase the likehood for someone to develop an anxiety.

4)Brain chemisty

   abnormal level of neurotransmitter can causes anxiety.Individuals with anxiety sometimes is believe to have a low levels of benzodiazapine.A low level of serotonin are also maybe can causes the anxiety.