Bipolar disorder does not necessarily skip generations, but it can run in families. This means that if someone has a family member with bipolar disorder, they may have a higher risk of developing the condition themselves. However, it's important to note that having a family history of bipolar disorder doesn't guarantee that someone will develop it. The exact cause is not fully understood and likely involves a combination of genetic, environmental, and other factors. If you have concerns about bipolar disorder in your family, it's best to consult with a healthcare professional for personalized advice and information.