Remus Lupin Explains Why Dementors Affect Harry So Strongly
Pages 186-188
After class, Harry asks Remus Lupin why the dementors affect him more than others. Lupin explains that it has nothing to do with weakness but rather that Harry has experienced more trauma than his peers. He describes dementors as creatures that drain peace and happiness, leaving only despair. When they come near, Harry relives his worst memory—his mother's death at the hands of Lord Voldemort.