Bipolar 1 vs. Bipolar 2: What’s the Real Difference?

Bipolar 1 and bipolar 2 differ in the severity of manic episodes and the role depression plays. Here’s what separates them, and how co-occurring substance use factors into treatment.

Bipolar 1 and bipolar 2 differ in the severity of manic episodes and the role depression plays. Here’s what separates them, and how co-occurring substance use factors into treatment.