Anyone know what this is called?

Okay, so, I used to be terrified of depression, to the point where I was actually getting depressed. (Ironic, isn't it?) Anyhow, I cured myself via writing (I wrote a story about someone with depression and actually cured myself. Writing is like self-therapy). But I was just wondering if any of y'all knew what the fear of depression is called. Just wondering. :) Thanks.