Can Parkinson's exacerbate depression?
02:44Robin Williams' widow has said the late actor had early stages of Parkinson's, and NBC News' Dr. Nancy Snyderman joins Morning Joe to discuss research showing Parkinson's can worsen depression.
Robin Williams' widow has said the late actor had early stages of Parkinson's, and NBC News' Dr. Nancy Snyderman joins Morning Joe to discuss research showing Parkinson's can worsen depression.
