Overview The following are the four first hardcover English editions of O'Sullivan's books: • For the publication date, see this link. • • •
''It's All in Your Head: True Stories of Imaginary Illness'' (2015) This, Sullivan's first book, was published by
Chatto & Windus in 2015, to positive reviews.is an account of how the study of
epilepsy changed scientists’ understanding of the
human brain. It explores modern views and treatments for epilepsy, and looks at what each teaches about how the brain functions. Among the characters
Brainstorm presents are: • Donal, who
hallucinates cartoon dwarves; • Maya, who faces possible radical surgery to address her
epilepsy; • Sharon, who experiences seizures who cause was other than diagnosed;
The Sleeping Beauties: And Other Stories of Mystery Illness (2021) This, O'Sullivan's third book, was published in April 2021 by Picador in England, and by Pantheon in the United States, and was lauded by
The Royal Society and other organisations.In this book, O’Sullivan travels to visit communities globally that are said to be affected by mass hysteria and
culture bound syndromes—ways that specific cultures express distress, troubled thoughts, etc. Among the characters
Brainstorm presents are: • schoolgirls in Colombia presenting with seizures, as an apparent contagious outbreak; • Kazakhstani townspeople presenting with apparent
sleeping sickness, again apparently contagious; • the victims of
sonic weapon attacks; •
indigenous Nicaraguans presenting with 'crazy sickness'; and • a New York high school presenting with a
Tourette's-like syndrome that is spreading.
The Age of Diagnosis Sickness, Health and Why Medicine Has Gone Too Far (2025) This, O'Sullivan's fourth book, was published in March 2025 by Thesis-Penguin Random House in England, to positive early reviews. == Personal life ==