Do you spend endless hours online? Are you one of millions who can’t get enough of MySpace or Facebook?

Internet addiction is a "common" mental disorder and health officials need to recognize it as such, said Dr. Jerald Block in The American Journal of Psychiatry; it is being reported by news.com.au.

Block claims Internet addiction has three subtypes: excessive gambling, sexual preoccupations and e-mail or text messaging.

Click here to read the article.

"Internet addiction appears to be a common disorder that merits inclusion in the Diagnostic and Statistical Manual of Mental Disorders," Block said in the journal.

Internet addictions have these components in common: excessive use, withdrawal, tolerance and negative repercussions, Block said.

Then, addicts develop a tolerance to a certain level of technology, making them want to upgrade software and hardware, he said in the Journal.

As a result of Internet addiction, people often suffer from social isolation and fatigue.

Click here to the full story at news.com.au.

Click here to comment on this story and any other story on foxnewshealth.com.