The main difference between bipolar 1 and bipolar 2 disorders lies in the severity of the manic episodes caused by each type. A person with bipolar 1 will experience a full manic episode, while a person with bipolar 2 will experience only a hypomanic episode

 

Bipolar disorder is easily confused with depression because it can include depressive episodes. The main difference between the two is that depression is unipolar, meaning that there is no “up” period, but bipolar disorder includes symptoms of mania