What was the nature of Tatya Patil's mysterious illness and its equally mysterious cure as described in the text?

The source text describes Tatya Patil's experience with a severe illness that was cured in a highly unconventional manner. As recounted in Chapter 13, his healing came through a series of strange dreams. In one, a teacher beat him with a cane, and in another, a gentleman used a grinding stone on his chest, causing him immense agony. Despite the dream's terrifying nature, Patil woke up feeling an "unprecedented freshness," with his disease having vanished completely. People may call dreams illusions, but for Patil, this dream brought about the very real destruction of his disease and relief from sorrow, which he considered a rebirth.