In "The Seven-Per-Cent Solution", this literary character is treated by Sigmund Freud for drug addiction
... Holmes and Freud, and its script which explains many of Holmes's 
character... [DOC] [TLE] The Seven-Per-Cent Solution - Wikipedia [PAR] The Seven-Per-Cent Solution: Being a Reprint from the Reminiscences of John H
. Watson, ... Knowing that Sherlock would never willingly see a doctor about his 
addiction and mental problems, Watson and ...