>Some people may also experience anger when they’re hurt. “Instead of feeling vulnerable to the pain of feeling the hurt, they instead feel anger and often feel a desire to hurt others,” explained Moore.
>Also, Moore said depression and anxiety are examples of unexpressed anger, because anger turned inward often results in self-hatred, which causes depression.

I feel like it goes both ways for me. I've always had anxiety as well as some depression it's pretty much chronic at this point (not that I necessarily think it can't be fixed) but in the last few years I've had a lot more pent up anger and became much more likely to raise my voice or act out. Up until my early 20s I had a much more mild temper I think (granted I was also much wealthier)