What does it mean to be sick when medicine refuses to believe you are ill? In The Invisible Kingdom: Reimagining Chronic Illness, poet, journalist and memoirist Meghan O’Rourke invites readers into the haunting, liminal world of unvalidated illness—a place all too familiar to millions suffering from autoimmune and complex chronic conditions. O’Rourke’s work is both a personal chronicle and a searing cultural critique, combining lyricism with investigative rigor. For readers of Intima, especially those who straddle the spaces of caregiving, patienthood, and medicine, this book is not merely relevant—it is essential.