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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Ada offers an AI-powered symptom assessment optimized by clinicians to help manage health.ada.com - Registration Required, App Only -
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The checker lets visitors enter many symptoms in their own words.symptomchecker.isabelhealthcare.com -
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WebMD's popular symptom checker allows symptom entry via an interactive body map.symptoms.webmd.com
Additional Tools
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Limited but easy-to-use symptom checker with physician-reviewed questions about health issues.familydoctor.org -
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Choose your primary symptom and related factors to narrow potential medical conditions.mayoclinic.org -
High quality dermatology information site offering a rash and skin condition identifier tool.skinsight.com -
Free, user-friendly 3-minute symptom quiz from a Tokyo-based developer, overseen by doctors.ubiehealth.com