The exact causes of Bipolar disorder are not fully understood, but research suggests that a combination of genetic, environmental, and biological factors may contribute to its development.
Genetics may play a role, as Bipolar disorder tends to run in families. Environmental factors, such as stress, trauma, or substance abuse, may also trigger episodes of Bipolar disorder in some individuals.
Brain chemistry is thought to be another factor in the development of Bipolar disorder. People with Bipolar disorder may have an imbalance of neurotransmitters, such as dopamine and serotonin, which can affect mood and behavior.