Are there any common causes of depression?

In my experience, emotional trauma causes depression. The trauma can differ from person to person, but anything that causes emotional pain can cause depression.

Repressed uneasy feelings not worked on especially when something unexpected occurs from the smallest of issue like someone bumping into us by hitting their shoulders on our shoulders even by accident that we did not forgive the other for and it happens every now and then in crowded places and anger builds up due to unforgiveness and acceptance. "When we are unable to forgive that becomes like poison within us in form of anger/numbness for example. We forgive not cos the other deserve it but cos we deserve the unforgiveness to be off us to have a healthy mind to move on."

Depression is often caused by boredom. When the member or person has to much time, and not enough to do, the mind begins to over-think and this seems to be a major cause in depression

Genetics, bullying, physical/sexual/emotional/finacial or any other kind of abuse, low self esteem, addiction(which also happens to be a common symptom)

From what I've observed, common causes of depression would be trauma from a bad past, bad childhood, broken home, abuse, and rejection.

common causes of depression are loneliness , the fear of loosing the loved ones or fear of some kind of failure..

A common cause of depression has to do with low self esteem. It is hard to love yourself if you can't see the good in yourself.

Lack of people who care about you and feeling alone, like you are not special to anyone. Maybe also the circumstances you are going through life are dragging you down...

sometimes traumatic events in ones life cause be a root cause for depression, but in the grand scheme of things, depression is a chemical imbalance. Some people are more susceptible to having depression than others because of their biological makeup and also the environment in which they live.

Depression can be caused by so many things. Life changes, hormones, tragedy, stress. Anything can cause depression, but there are also many ways of effectively handling it.