Each has it's pros and cons. Best strategy is to tell the ones you think need to know. It's generally a bad idea to tell your coworkers or boss.

The other strategy is to tell everyone and don't care what others think about you. You will loose some friends with this strategy, but then the ones who walk away were never your friends to begin with.

I'm more inclined to opt for the second strategy in my personal life. Anyone who tries to use my diagnose against me gets cut out of my life, I won't tolerate that type of behavior.