The Basis Of Dementors
Dementors were based on the demons and struggles that Rowling faced after her mother died in 1990 from multiple sclerosis.
“It’s so difficult to describe [depression] to someone who’s never been there, because it’s not sadness,” Rowling told Oprah Winfrey. “I know sadness.
Sadness is to cry and to feel. But it’s that cold absence of feeling—that really hollowed-out feeling. That’s what Dementors are.”