The essential feature of bipolar is shifts between depressive and manic moods. Bipolar II is mainly characterized by recurrent depressive mood states in the lifespan.
Some periods of depressive episodes in bipolar may involve catatonic elements that involve decreased motor activity that create rigidity in the body. This may be exhibited in peculiar postures, echolalia or echopraxia.
Seasonal patterns have great impact on mood. Periods of low sunlight, such as winter, may increase the chances of depressive episodes in individuals with bipolar.
Bipolar II disorder is marked by periods of depressive and manic episodes. Some individuals go in and out of these episodes very quickly, creating the subtype of rapid cycling.
After the birth of a child, there are chemicals in the body that may cause psychological shifts. Postpartum onset is a subtype of bipolar that starts within four weeks of birth.
Mood disorders have the potential for drastic behavioral shifts. Bipolar II disorder is a popular disorder that is mainly characterized by shifts between manic and depressive mood states with focus on the depressive mood states.