Is this just another story of social breakdown in the modern age？Not really.But they are the effects of a real social problem——Internet Addiction (上瘾)．Or，Internet Addiction disorder.

　　There have been few long-term studies of this very 21st century illness.

　　But the extension of the obsession is obvious from the popularity of one game alone：“Halo 2”．It’s a first-person shooter developed by Budgie Studios for the Xbox video game console.By early 2005,1 million players worldwide had clocked up an amazing 100 million hours on the game.

　　China has about 94 million regular Internet users.Of these，a survey suggested,4.4 million are teenagers so addicted to it that they neglect everything else.

　　Video gamers who have gone too far display symptoms similar to those of alcohol and drug abusers.“The real world meant nothing to me when I was fully involved with online games.I lost track of time，space，hunger，pain，everything，” explained Liu Pinyi，a 19-year-old college dropout.She has had treatment in Beijing for her addiction.

　　What makes it similar to drugs is that online game addicts also develop a chemical imbalance in the brain.Gaming stimulates (刺激) the production of a chemical compound that produces euphoric or pleasant feelings.When they’re away from the screen，their levels of chemicals produce this“ high” drop.And the addict suffers feelings of anxiety and headaches.

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