The distinction between bipolar disorder type 1 and type 2 lies in the severity and duration of the manic or hypomanic episodes. In type 1, individuals experience full-blown manic episodes that last for at least seven days or are severe enough to require hospitalization. On the other hand, in type 2, the manic episodes are milder and are referred to as hypomanic episodes, lasting for at least four days.
In some cases, the initial diagnosis of bipolar disorder may be uncertain, and the specific type might not be immediately clear. Additionally, the presentation of symptoms can change over time, which can lead to adjustments in the diagnosis.
It is possible for a person initially diagnosed with bipolar disorder type 2 to later experience more severe manic episodes, leading to a reevaluation of the diagnosis to bipolar disorder type 1. Such a change in diagnosis could occur if the individual starts to experience full manic episodes that meet the criteria for bipolar disorder type 1.
Furthermore, bipolar disorder is a complex and heterogeneous condition, and sometimes individuals' symptoms may evolve or change over time. This is why it's essential for individuals with bipolar disorder to maintain regular communication with their mental health professionals. Regular check-ins, monitoring of symptoms, and adjustments to treatment if necessary can help manage the condition effectively and ensure that the diagnosis remains accurate based on the current symptomatology.