At 6, Los Angeles boy Dylan Siegel wrote and sold a book calledChocolate Barto help fund research into his best friend Jonah’s rare liver disorder. What began as a child’s idea grew into a fundraising effort that had raised $1 million by 2014.

A man with Ross syndrome, a rare sweating disorder, developed pale skin and hair loss on the sweatier side of his face over 15 years.

The fast bowler, who played 80 times for his country in all formats, was reportedly receiving treatment for a rare and severe immune system disorder.