A mother, in her quest to uncover the cause of her son's chronic headaches, spent three years consulting with 17 medical experts across various fields, yet no definitive diagnosis was made. It wasn't until she input all the symptoms and test data into ChatGPT, an artificial intelligence system, that ChatGPT surprisingly identified a rare condition overlooked by the doctors—Tethered Cord Syndrome. This case illustrates that large language model AI systems like ChatGPT indeed have the capability to accurately diagnose certain complex ailments, boasting a broader knowledge base and faster search capabilities, sometimes even surpassing human experts. However, it is crucial to note that AI systems also carry the risk of providing erroneous information, which can have particularly severe consequences in the healthcare sector. The current discourse around medical chatbots primarily revolves around whether they are reliable enough to rival or even surpass human experts, and who should bear the responsibility if mistakes occur. This necessitates further discussion and regulation. Nevertheless, new AI systems like ChatGPT offer fresh possibilities for the diagnosis of complex medical conditions.