Thank you, Christina.

You're right in that this doesn't actually fit the true definition of rapid cycling. Clinically, this would likely fall more in the realm of a mixed episode, however, I can find examples of this pattern going back 30 years.

I'll explain with more detail what happens:
I finish an editing job. I feel good and proud. It's a success. 30 minutes later I'm on the edge of tears, depressed and doubting I have any real worth.

I laugh with the cashier as I'm paying for my groceries. As I start my car, I sob with the desire to cut myself open and dump the putrescence that is my soul onto the ground.

Real examples and I have hundreds more. It happens practically every day. So hard to deal with.