Here are what I feel to be the main contributor’s to an anxiety disorder:

Chemical Imbalance:

It has been shown that certain person’s suffer from a chemical imbalance which can lead to a state of mind being more prevalent. For example, someone who suffer’s from insomnia often suffers from a lack of melatonin- a naturally occuring hormone that is crucial for a regular sleep cycle. It is much the same with anxiety- various hormonal imbalances can cause anxiety to be a bigger issue.

Emotions Being Suppressed:

When people suppress emotions, it ultimately leads to a larger issue. We as humans need to express our emotions and feelings to remain balanced and to not accumulate negative thoughts. It is extremely therapeutic to discuss your emotions with someone.

Mental and Physical Exhaustion:

When the body undergoes any form of stress - mental or physical it results in the body and mind becomin sensitsed and receptive to nervous forms of illness. This again is why it is so important to address any issues as early as possible to prevent them from leading so serious anxiety issues.