Hi, TBI/PTSD,

Basically, having been manic puts one in the Bipolar I category even though one might feel depressed most of the time.

It does not matter that much about exact diagnosis.
(But do not take my word for it because others disagree.)
With treatment I am Bipolar II --mostly depressed. . . . although the anxiety often is stronger than the depression.
Without treatment or with poor treatment I was sometimes mixed http://pro.psychcentral.com/2013/dsm...s/004312.html#
(Mixed is more likely to cause suicides that any other type of bipolar.)
The DMS IV had mixed as a clear cateagory.
The DSM 5 has moved mixed to "with mixed modifiers:"

http://pro.psychcentral.com/2013/dsm...s/004312.html#
I got diagnosed in the late 1980's when pdocs were still working with two types of of bipolar -- adult and pediatric.
Later, no pdoc re-named my version. (I get very agitated and energetic in ways that go so much beyond anxiety.)

Current pdoc probably has decided on a diagnosis based on one 30-minute session but that is o.k. with me.
He can call me whatever he wants as long as he gets the meds right.

Mari