I agree, depression is an invisible illness so people forget you have it. They also trivialise it because they think they know what being sad is like and they think sadness is depression.

I agree it's wise to be careful who you share with. I was lucky when I was able to work, I had the same job for some time and once I had gained some respect I "came out" and people learned that depression doesn't make you grow an extra head!

Best wishes