If by episdoe you mean the whole "nervous breakdown" type screaming, crying freaking out explosing... exploding, then I just had one yesterday.
I can have them as frequently as 2 times a week when I'm not doing so well. I actually had one last week as well. I think it was Wednesday. THis has been a pretty rocky month for me, actually.
The night before I wasn't feeling so great. I was already aggitated when I went to bed. It didn't take much to push me over yesterday.
Usually, though, I think I only have them once every 2 months but when I'm not doing so well they are more frequent.

That's the danger of me being mixed or cycling so fast all the time, and having 0 treatment.

I usually just have a crying screaming fit, I'm not violent. But, sometimes I hurt myself. I didn't this time. I've been working on that.