Ciro Marangoni, MD

ADHD can present with symptoms such as irritability, mood lability, low frustration tolerance and low self-esteem, making it easily confused with mood disorders and personality disorders.

Mood switching is not uncommon and it is much more prevalent in depressed juveniles than in depressed adults, and there is a large apparent excess of antidepressant-associated switching over reported spontaneous diagnostic changes to bipolar disorder. Details here.