Bipolar 1 Disorder:

• Manic Episodes: The key feature of Bipolar 1 is the presence of manic episodes. These are periods of extremely elevated mood, energy, and activity levels that last at least one week. During a manic episode, individuals may feel euphoric, overly energetic, or unusually irritable. They might engage in risky behaviors like spending sprees or reckless driving.

• Depressive Episodes: While not required for diagnosis, depressive episodes often occur as well. These involve feelings of sadness, hopelessness, and loss of interest in most activities.

• Mixed Features: Sometimes symptoms of mania and depression can occur simultaneously.

Bipolar 2 Disorder:

• Hypomanic Episodes: Instead of full-blown mania, people with Bipolar 2 experience hypomania. Hypomanic episodes are similar to manic episodes but less severe; they last at least four days and do not cause significant impairment in social or occupational functioning.

• Depressive Episodes: Depressive episodes are more frequent and intense in Bipolar 2 compared to Bipolar 1. These periods can be debilitating.

Key Differences:

• Severity of Mania/Hypomania: The primary difference lies in the severity; full mania occurs in Bipolar 1 while hypomania occurs in Bipolar 2.

• Impact on Life: Manic episodes can significantly disrupt daily life due to their intensity; hypomanic episodes tend to be less disruptive but still noticeable.