Correction: The original version of this article misstated the symptom checker's original launch date. WebMD, long the go-to for patients turning to the internet for an answer to mysterious symptoms, ...

For the best experience, please enable JavaScript in your browser settings. People looking to a popular online symptom checker for answers about eye problems often ...

We’ve all done it: You plug your aches and pains into WebMD’s Symptom Checker, see that it could be either “cancer” or “seasonal allergies,” and promptly close out the window and decide to ignore ...