Genetic factors may play a role in the development of anxiety disorders, according to Mayo Clinic. Anxiety can be caused by different factors such as a mental disorder, a physical illness or drug use, explains WebMD.
In addition to genetics, Mayo Clinic states that personality may also play a role in the development of anxiety disorders. Additionally, females are more likely to have issues associated with anxiety.
External factors also play a significant role in the development of anxiety problems. Difficulties at work or school often contribute to anxiety, in addition to troubled relationships, financial issues and emotional trauma, according to WebMD. Illicit drug use and side effects from medications also frequently cause anxiety.