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2. …And Periods of Lows
The other side of the mania is the depression. This is why bipolar disorder used to be called manic depression. People with bipolar disorder will commonly spend much more of their time being depressed than manic. A depressive episode will be marked by feeling sad or irritable, feeling worthless or guilty, having less interested in things, less energy, and less concentration. People also report having changes in sleeping and eating habits. These symptoms need to last for two weeks to qualify as a depressive episode, but they usually last much longer.