Google announced last week that it is rolling out new symptom-related direct answers on mobile.

According to the announcement, searches for specific symptoms like “headache on one side” will display a list of related conditions, while a search for an individual symptom such as “headache” will return a description of the symptom, self-treatment options and possible health issues related to the symptom that may necessitate a doctor’s visit.

Google says it worked with a team of medical doctors, experts at Harvard Medical School and the Mayo Clinic when pulling together information for symptom-related searches, and that its symptom-related information is curated from “high-quality medical information” pulled from the Knowledge Graph.

By doing this, our goal is to help you to navigate and explore health conditions related to your symptoms, and quickly get to the point where you can do more in-depth research on the web or talk to a health professional.
Official Google Blog
Google says one percent of its searches are symptom-related.

The new symptom-related search results are being rolled out exclusively on mobile in the coming days, and only in English in the US. Google says it plans to include more symptom-related searches and will eventually extend such search results globally in other languages.