Immanuel is having tremendous difficulty controlling his drinking behavior even at a time when he is recovering from a liver transplant surgery. Drinking alcohol at this stage of the recovery process is not only detrimental to his health but can also lead to serious medical complications. Which of the following would best describe Immanuel's condition? 

• psychophysiological disorder 
• psychosomatic disorder illness 
• anxiety disorder
•  psychological factors affecting a medical condition