Conversation so far:
Did Bobby Fischer start out playing chess with his family?
In March 1949, 6-year-old Bobby Fischer and his sister Joan learned how to play chess using the instructions from a set bought at a candy store.
When was Bobby Fischer born?
Bobby Fischer was born at Michael Reese Hospital in Chicago, Illinois, on March 9, 1943.
How did Bobby Fischer start playing chess?
When Joan lost interest in chess and Regina did not have time to play, Bobby Fischer was left to play many of his first games against himself.

Question: Did he have any illnesses as a child?
Self-contained rewrite: Did Bobby Fischer have any illnesses as a child?