Definition of cyberchondriac in English:
 cyberchondriac
nounˌsʌɪbəˈkɒndrɪakˌsībərˈkändrēak
A person who compulsively searches the Internet for information about particular real or imagined symptoms of illness.
 everybody is terribly health-conscious these days—it's no surprise that many people are becoming cyberchondriacs
 Example sentencesExamples
-  It is because cyberchondriacs fervently believe they are physically ill that they get so frustrated when told they are not.
 -  Are you a cyberchondriac?
 -  Like hypochondriacs constantly imagining they have various fatal illnesses, cyberchondriacs declare themselves outrageously sick after reading medical material on the Web.
 -  There's a couple of things that you can do to sort of do safe surfing without becoming a cyberchondriac.
 -  Health information online is breeding a generation of cyberchondriacs.
 -  So to become a "cyberchondriac" and join the 80 percent of Americans who scour the Web for health information, click here for the latest.
 -  The percentage of all adults who are cyberchondriacs increased from 27% in 1998 to 34% in 1999, 47% in 2001, and 53% in 2002.
 -  Just don't become a cyberchondriac, will you?
 -  Cyberchondriacs are less likely to be older people and people with low incomes.
 -  Doctors are on the alert for a new kind of victim: the cyberchondriac. With so much health information now in the Internet, thousands of people are using their computers to try to match symptoms with diseases.
 -  She suggests that fellow cyberchondriacs try what worked for her: 'I stopped looking up my symptoms on the Internet'!
 -  Australian doctors have warned that they are coming across various 'cyberchondriacs' - patients who misdiagnose their illnesses after Googling their symptoms.
 -  Self-diagnosis is dodgy at best and when it comes to trying to determine whether you are a cyberchondriac, it's bit of a Catch-22 situation.
 -  Many health professionals warn the web has created a world of cyberchondriacs.
 -  One of the main problems that cyberchondriacs face is that the web is not always reliable.
 -  If you're one of those people who frequently looks up their symptoms online and then panics at the diagnosis, or rather 'search results', it's possible that you're displaying all the hallmarks of a cyberchondriac.
 
Derivatives
  
noun
 Many Internet users are following inaccurate information online, which U.K. researchers say can lead to erroneous self-diagnoses and cyberchondria.
 Example sentencesExamples
-  Overwhelming amounts of online medical information are leading researchers to coin a new psychological classification called "cyberchondria" that describes people who obsessively misdiagnose themselves using the Web.
 -  She has featured in a number of articles about cyberchondria, which occurs when an individual surfs the net in a frenzy of health anxiety.
 -  The phenomenon of cyberchondria - where patients take as read material they have spotted on the Net, then tell their GP all about their supposed condition - is already with us.
 -  We wrote about this back in February, but apparently the researchers behind the idea haven't gotten enough publicity yet, so they're out pushing the idea of cyberchondria again.
 
Origin
  
1990s: blend of cyber- and hypochondriac.