a person with bipolar disorder can also have something called "mixed episodes" where they are extremely depressed, but it can be a very high-strung screaming, sobbing depression, or have other forms of mania mixed with depression.
hypomania,mania, and mixed episodes can include racing thoughts, which is what sabasitious may be experiencing at the moment in the form of all of these people coming in at once with overwhelming emotions. sebastious also mentioned having several "episodes" a month - bipolar disorder can be intensely episodic and easily triggered when untreated
As I said, I am not a licenced psychitrist, but this very well could be bipolar disorder. Or maybe not, which is why I suggested professional evaluation.