A Doctor, abbreviated as Dr., is someone in the professional community who holds a doctorate. The title is most commonly applies to people in the medical field including general physicians, specialists, dentist, surgeons and veterinarians. It also applies to members of the scientific community as well some professionals studying literary arts. There are those however, who may just want to slap the title "Doctor" in front of their name because it sounds bad-ass. Trust me, you don't want someone named Doctor Doom treating your head injury.
In stories that take place in the Old West, a common nickname for a Doctor was "Doc". This was also the nickname of young Danny Torrance from the 1980 horror film The Shining as well as the 1997 television adaptation of Stephen King's The Shining. Doctor James Hayes from the 1970 film Count Yorga, Vampire, was a physician who treated a young woman named Erica Landers, who complained of listless behavior and possessed two small puncture wounds in her throat. Hayes quickly deduced that she was the victim of a vampire.
Another medical professional is a doctor of psychiatry. In the 1978 slasher film Halloween, Doctor Sam Loomis (played by Donld Pleasence) was the custodian of mental patient Michael Myers at Smith's Grove Sanitarium in Haddonfield, Illinois. Loomis' treatment was not particularly successful as he himself recounted, "I spent eight years trying to reach him, and then another seven trying to keep him locked up because I realized that what was living behind that boy's eyes was purely and simply... evil."
In the 1984 film A Nightmare on Elm Street, teenager Nancy Thompson went to the Katja Institute where a dream specialist named Doctor Samuel King treated her for nightmares regarding a hideously burned murderer named Freddy Krueger. Another Doctor from this film series is Doctor Campbell, who was a consultant for the Westin Hills Psychiatric Hospital and the father of Lori Campbell. It was Doctor Campbell who prescribed Hypnocil to patients in the hopes of suppressing their dreams to protect them from Freddy Krueger.