Major
Persistent
Bipolar
Seasonal Addictive Depression (SAD)
Post-Partum (after you have a baby)
Clinical
Cyclical
Major
Chronic
Manic
With Bipolar the HIGH is Mania
the LOW is Depression
I don't know how many millions may suffer from some form of it but it's very different from being "down in the dumps" occcasionally.
How does it affect the day-to-day lives of those who suffer from it?
How does it affect the lives of those who live with the depression of others
There some forms that are considered to be genetic....meaning a family might have a tendency for it