I read a book that just came out with a character that is the closest to AvPD I've ever found. The diagnosis in the book is different, but it stems from long term extreme child abuse by her parent, and it manifests in the character in some classically avoidant ways.

The book is called Eleanor Oliphant is Completely Fine by Gail Honeyman.

It made me extremely uncomfortable, because there were so many things that happened in the book that either I've done or I could totally see myself doing.

It also made me uncomfortable when it veered from my experience and I realized again that the character did not have AvPD. She has extremely poor social skills, and also the ending sorts itself out a bit (a lot) too neatly.

It's rare one comes across anything to relate to when one has AvPD. Again, this character does not have it. But if you've ever had the urge to read something that looks walks and talks like AvPD, I absolutely give it my recommendation.

That said, it could be massively triggering. It does end positively (spoiler I guess) though probably not as one might expect. She goes through therapy and makes some pretty huge life changes in the course of the book, and it goes into detail about her anxiety about the changes.