Sadness, irritability, fatigue, and distractedness are among the most common side effects of grief while parenting.

Without medical records that he hasn't released, we can't know whether Gingrich may have inherited his mother's manic depression. Nevertheless, one observes in the former House Speaker certain symptoms - bouts of grandiosity, megalomania, irritability, racing thoughts, spending sprees - that go beyond the ordinary politician's normal narcissism.