What was Amir Shakkar's ailment, and what 'medicine' did Sai Baba prescribe for him during his stay in the Chavadi?

Amir Shakkar was suffering from rheumatism, which caused the joints of his body to be seized up. The 'medicine' Sai Baba prescribed for this condition was not a physical substance but His unshakeable word and command. As detailed in Chapter 22, Baba's firm words were for Amir to stay in the damp and windy Chavadi and not to weigh the discomforts of the place. The true remedy was for Amir to accept Baba's word as medicine and maintain certain faith internally, even when all external conditions were contrary. This test of faith was Baba's unique prescription for his ailment.