Also on subreddits functioning as support groups for certain diseases, you'll see posts that just don't quite add up, at least if you know somewhat about the disease (because you or a loved one have it). Maybe they're "zebras" with a highly atypical presentation (e.g., very early age of onset), or maybe they're "Munchies." Or maybe LLMs are posting their spurious accounts of their cancer or neurdegenerative disease diagnosis, to which well-meaning humans actually afflicted with the condition respond (probably along side bots) with their sympathy and suggestions.