Signs and symptoms of Internet addiction or computer addiction

• Losing track of time online. Do you frequently find yourself on the Internet longer than you intended? Does a few minutes turn in to a few hours? Do you get irritated or cranky if your online time is interrupted?
• Having trouble completing tasks at work or home. Do you find laundry piling up and little food in the house for dinner because you’ve been busy online? Perhaps you find yourself working late more often because you can’t complete your work on time — then staying even longer when everyone else has gone home so you can use the Internet freely.
• Isolation from family and friends. Is your social life suffering because of all the time you spend online? Are you neglecting your family and friends? Do you feel like no one in your “real” life — even your spouse — understands you like your online friends?
• Feeling guilty or defensive about your Internet use. Are you sick of your spouse nagging you to get off the computer and spend time together? Do you hide your Internet use or lie to your boss and family about the amount of time you spend on the computer and what you do while you’re online?
• Feeling a sense of euphoria while involved in Internet activities. Do you use the Internet as an outlet when stressed, sad, or for sexual gratification or excitement? Have you tried to limit your Internet time but failed?

Physical symptoms of Internet addiction

Internet or computer addiction can also cause physical discomfort such as:

• Carpal Tunnel Syndrome (pain and numbness in hands and wrists)
• Dry eyes or strained vision
• Back aches and neck aches; severe headaches
• Sleep disturbances
• Pronounced weight gain or weight loss

(Source: helpguide.org)