Independent The Reading List: There’s Nothing Wrong With Her describes the unique hell of long Covid After writing a bestselling mystery novel, Kate Weinberg found herself in a plotless place with no neat, obvious ending: suffering the torturous, confusing ordeal of long Covid. Now she’s turned the experience into a funny, philosophical novel – one that, as Jessie Thompson knows from experience, perfectly captures the surreal state of invisible illness
Side note: "Ill defined" has probably been used before but would also be a potential title for @Jonathan Edwards' book.