Schizophrenia and bipolar disorder, once known as manic-depression, are common but debilitating mental illnesses. Patients suffer from delusions, hallucinations and severe mood problems.

Family history has been a known risk factor for mental illnesses like schizophrenia and bipolar disorder. Now, researchers find more similarity between these disorders.

Previous research argued that patients with bipolar disorder, or manic-depressive disorder, are more likely to be violent. Is this increased violence due to the bipolar disorder alone, or caused by other aspects of the individual's behavior?

A new study suggests veterans with any psychiatric illness face an increased risk of suicide and those with bipolar disorder are at an even greater risk.

Bipolar disorder does not increase the risk of committing violent crime in affected individuals, according to a new study from Sweden's Karolinska Institutet.