Which of the following is NOT a symptom of bipolar disorder?

Bipolar disorder is characterized by episodes of depression and periods of mania or hypomania. During these manic or hypomanic episodes, individuals often experience symptoms such as grandiosity, which is an inflated sense of self-importance. Depression is also a hallmark symptom of bipolar disorder, as individuals cycle between depressive episodes and manic or hypomanic episodes. Agitation can also occur during these manic states, manifesting as restlessness or increased energy levels.

Hallucinations, on the other hand, are not typical symptoms of bipolar disorder; they are more commonly associated with psychotic disorders such as schizophrenia. While individuals with severe mood episodes in bipolar disorder may experience psychotic features (like delusions or hallucinations), these are not considered core symptoms of the disorder itself. Thus, hallucinations are not a direct symptom of bipolar disorder but could be present under specific circumstances, making this option the correct choice for what is not a standard symptom associated with the condition.