Jennifer Panning, a psychologist from Evanston, Illinois, calls the phenomenon “Trump Anxiety Disorder.” She wrote a chapter on it in a collection by mental health experts called “The Dangerous Case of Donald Trump.” In an interview, she said the disorder is marked by such symptoms as “increased worry, obsessive thought patterns, muscle tension and obsessive preoccupation with the news.”

A study from the market research firm Galileo also found that, in the first 100 days after Trump’s election, 40 percent of people said they “can no longer have open and honest conversations with some friends or family members.” Nearly a quarter of respondents said their political views have hurt their personal relationships.

This goes beyond office arguments or the Thanksgiving gathering in which some cousin or in-law drinks too much and someone storms out after the diner-table conversation turns to politics. Even the closest daily relationships can suffer.