Here's what caused Sherlock's illness in Elementary season 5. 1 / 7
Sherlock was created in 1887 and has appeared in numerous adaptations, including the Robert Downey, Jr movies. 2 / 7
Benedict Cumberbatch also became a star following his lead turn in BBC's Sherlock. 3 / 7
CBS' Elementary is a contemporary update set in New York. 4 / 7
In season 5 Holmes suffers from unexplained memory loss and hallucinations. 5 / 7
The cause is revealed to be post-concussion syndrome in Elementary season 6. 6 / 7
He struggles to work and manage his condition throughout the sixth season. 7 / 7