As a nurse myself I have a hard time reading most medical fiction because it’s so very ridiculously wrong, but there are a few that I’d recommend. The first would be Emma Donoghue’s newer book (I believe it came out in July of 2020…) “The Pull of the Stars” which is set during the 1918 Spanish-Flu pandemic. She wrote it long before the CoVID-19 pandemic started but since it wasn’t released until after it made the book (for myself at least) that much more relevant. There’s also “One Flew Over the Cuckoo’s Nest” by Ken Kesey, “Cereus Blooms at Night” by Shani Mootoo, “Hummingbird House” by Patricia Henley, “Never Change” by Elizabeth Berg… I suppose it woks help if I know what your favorite genre/s are. As far as a neurodiverse protagonist seriously ANY book that has a character who experiences any type of mental health disorder (depression, OCD, PTSD, etc, etc) there are SO many. Or any books with characters who have autism, dementia, epilepsy (though as someone with epilepsy good luck, please let me know if you happen to find any though). There are so many to choose from here but if you want to tell me what (genres, etc) you typical enjoy reading I’d be happy to give you some more specific recommendations. Hope this helps!