Bipolar disorder or manic–depressive disorder is a psychiatric diagnosis that describes a category of mood disorders defined by the presence of one or more episodes of abnormally elevated energy levels, cognition, and mood and one or more depressive episodes.
Bipolar disorder is a lifelong condition that can affect both how you feel and how you act. It is a mood disorder that can cause extreme mood swings, manic highs to depressive lows. To be diagnosed with bipolar disorder you must have experienced a high period.
Most people with bipolar disorder when ill experience more lows than highs. These lows are known as "bipolar depression." It's easy to feel like you're fading into the background when you're living with bipolar depression. However, bipolar depression doesn't have to consume you