My hypomanic episodes are usually a matter or weeks but when I go into mixed states, with full blown mania and major depression, they can last up to a few months, even with treatment (although it does have a dampening effect). The mixed states are hellish. I much prefer the hypomania. They are fun
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Bipolar 1 with psychotic features
PTSD
"Phew! For a minute there I lost myself."
'Karma Police' by Radiohead