Many of us after searching internet for headache gets a fear that they are suffering from brain tumor. A new study, just published in the Journal of Consumer Research, suggests you’re more apt to convince yourself you’re sicker than you are, all because of what you find on the internet.

Researchers in Hong Kong compiled evidence from six different web-based experiments. Most people who searched for health information about themselves overestimated the likelihood of having a serious or deadly disease.

In medicals science it is called third year syndrome.  A medical student while being taught about a disease starts thinking that he is suffering from the same on the basis of some common symptoms.