Kimberly Young developed the Internet Addiction Diagnostic Questionnaire, or IADQ, and a quiz is on www.netaddiction.com. Meeting five symptoms are necessary to be diagnosed.
• Do you feel preoccupied with the Internet -- think about previous online activity or anticipate next online session?
• Do you feel the need to use the Internet with increasing amounts of time in order to achieve satisfaction?
• Have you repeatedly made unsuccessful efforts to control, cut back or stop Internet use?
• Do you feel restless, moody, depressed or irritable when attempting to cut down or stop Internet use?
• Do you stay online longer than originally intended?
• Have you jeopardized or risked the loss of a significant relationship, job, educational or career opportunity because of the Internet?
• Have you lied to family members, a therapist or others to conceal the extent of involvement with the Internet?
• Do you use the Internet as a way of escaping from problems or of relieving a dysphoric mood (e.g., feelings of helplessness, guilt, anxiety, depression)?
Other symptoms include:
• Failed attempts to control behavior
• Heightened sense of euphoria while involved in computer and Internet activities
• Neglecting friends and family
• Neglecting sleep to stay online
• Being dishonest with others
• Feeling guilty, ashamed, anxious or depressed as a result of online behavior
• Physical changes such as weight gain or loss, backaches, headaches, carpal tunnel syndrome
• Withdrawing from other pleasurable activities