Conversation so far:
Where did Sherman Alexie grow up?
As a little child Sherman Alexie lived on the Spokane Indian Reservation, located west of Spokane.
Was Sherman Alexie an only child?
Sherman Alexie was one of six children.
Was Sherman Alexie the youngest child in the family?
What activities did Sherman Alexie do during his childhood?
Alexie excelled academically, reading everything available, including auto repair manuals.

Question: Tell me more about his health problems.
Self-contained rewrite: Tell me more about Sherman Alexie's health problems.