In The dangerous case of Donald Trump, twenty-seven psychiatrists, psychologists, and other mental health experts argue that, in Mr. Trump's case, their moral and civic "duty to warn" America supersedes professional neutrality. They then explore Trump's symptoms and potentially relevant diagnoses to find a complex, if also dangerously mad, man. His madness is catching, too. From the trauma people have experienced under the Trump administration to the cult-like characteristics of his followers, he has created unprecedented mental health consequences across our nation and beyond.