Just because you are crazy doesn't mean your not talented!  

ToesNose wrote on 11/10/13 at 07:43:40:

Actually.....

(Note I cannot recall the exact condition, and thus cannot Google it)
It is not uncommon for stroke vitcims whose brain has been damaged ( and generally is in a continuing decaying state) to present exceptional bouts of creativity. The creativity may or may not reflect talent or savant level abilty. However, it is well documented of persons suffering brain damage ( such as stroke) to go through a driven and creative existance, otherwise not part of thier normal personality. Often it is short lived, and passes.

Odd bit I picked up somewhere.. I think one of the TED talks.