The manic phase of Bipolar I Disorder is often misdiagnosed as Narcissistic Personality Disorder (NPD). Bipolar patients in the manic phase exhibit many of the signs and symptoms of pathological narcissism - hyperactivity, self-centeredness, lack of empathy, and control freakery. During this recurring chapter of the disease, the patient is euphoric, has grandiose fantasies, spins unrealistic schemes, and has frequent rage attacks (is irritable) if her or his wishes and plans are (inevitably) frustrated.