How do you know if you're having a mental breakdown?

You don't want to eat, you don't care about sleeping, you don't want to talk to people, you have extreme mood swings, you don't want to work, you have much more frequent panic attacks, you pass out from the fucking stress, your blood pressure is all crazy, you make so little sense to yourself, you make no sense to other people, everything wrong that ever happened in your past you did or done to you is inside your mind eating you up, you are paranoid af and you cant have single moment of peace.

And the most fun of all, you are suicidal.