Symptom Checkers
Symptom checkers provide individuals with a fast way to identify possible causes for their medical symptoms. Users enter their symptoms and respond to targeted follow-up questions that help narrow the possible causes. Studies published in the British Medical Journal (2020), MJA (2020), and PLOS ONE (2021) evaluated online symptom checkers for condition coverage, diagnostic accuracy, and appropriateness of urgent care advice. We used these studies to assemble this list of the best free symptom checkers on the web.
Diagnostic accuracy represents the percentage of result sets that yielded a correct diagnosis among the top three results (averaged across studies).
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Incredibly well designed and accurate symptom checker. Diagnostic accuracy of 77%.ada.com - Registration Required, App Only -
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Relied upon by doctors and nurses around the world. Diagnostic accuracy of 68%.symptomchecker.isabelhealthcare.com -
Powered by Infermedica. Expect many branched logic follow-up questions. Diagnostic accuracy of 60%.symptomate.com -
Most popular online symptom checker with interactive body map. Diagnostic accuracty of 59%.symptoms.webmd.com
Additional Tools
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Question-based symptom checker. Unfortunately, registration is required.khealth.com - Registration Required, App Only -
Choose your primary symptom and related factors to narrow potential medical conditions.mayoclinic.org -
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High quality dermatology information site offering a rash and skin condition identifier tool.skinsight.com -
