What was wrong with Amir Shakkar, and what unusual treatment did Sai Baba give him?

Amir Shakkar was suffering from a severe case of rheumatism. After he explained his illness to Sai Baba and prayed for relief, Baba prescribed a very peculiar remedy. As detailed in Chapter 22, Baba instructed him to go and stay steadily in the Chavadi. This was an order, and no arguments were entertained, even though the Chavadi was a dilapidated and uncomfortable place. Baba's firm words were his only medicine, and Amir was to accept this instruction with faith, which he did for nine months, despite the externally contrary conditions.