Doctors have treated the first reported case of "Internet addiction disorder" brought on by excessive use of Google Glass. In September 2013, a 31-year-old man was checked into the U.S. Navy"s Substance Abuse program for alcohol addiction【C1】______. The program requires patients to refrain from alcohol, drugs and cigarettes for 35 days and takes away electronic devices at the door.【C2】______they took away his Google Glass. Doctors quickly【C3】______that the man would frequently and involuntarily【C4】______his right hand and tap his temple area, a【C5】______usually necessary to【C6】______the display of Google Glass. He was going through withdrawal from his Google Glass. And the Google Glass withdrawal was【C7】______than the alcohol withdrawal he was experiencing. After checking into the program, he exhibited【C8】______symptoms of withdrawal: frustration, irritability, aggression and cravings. His addiction also【C9】______him with short-term memory problems. The Navy serviceman【C10】______the device 18 hours a day and took it off【C11】______to sleep and bathe. He【C12】______purchased Google Glass in order to【C13】______his performance at work But after owning the glasses for two months, the device【C14】______into his sleeping hours as well. Internet addiction is commonly【C15】______with cellphones, laptops and personal computers. This is the first reported case【C16】______Google Glass. Though it is a【C17】______problem, Internet addiction does not appear in the Diagnostic and Statistical Manual of Mental Disorders.【C18】______, it is included in the appendix as a disorder that requires further study. While some psychiatrists believe it can be a【C19】______problem, others maintain that it is【C20】______a symptom of other psychological issues.