7. Big B suffers from a disease called Myasthenia gravis. Big B has been suffering from it for the past 30 years. 1 2 3 4 5 6 7 8 9 10 11 Facebook Twitter Google+ Linkedin Pinterest Article Tags: Amitabh Bachchan · Amitabh Bachchan Lesser known Facts · Amitabh Bachchan unknown facts · Featured Article Categories: Bollywood