Is there an AI for checking my symptoms?

Free symptom checker: what you get without paying

Every symptom checker listed here is free to use. You answer questions about your symptoms, age and history, and get a short list of possible causes plus a recommended level of care, from home care to the ER. Several of the companies behind them also sell the same triage technology to hospitals and insurers.

What costs money is what comes after the checker. Some chat-style AI doctors cap the free tier (one listed here allows three messages a week, then charges $3.99 a month), and a video visit with a licensed human doctor costs $39 at another. Before you type in your medical history, read the privacy question in the FAQ below.

What an AI doctor can do, and what it cannot

An AI doctor is a chatbot built on medical information: you describe what is wrong, it asks follow-up questions, suggests likely causes and says how soon to get care. Some write a summary you can take to your own doctor. It cannot examine you, order a test or notice what a clinician would see in the room, and the most doctor-like app in this list says in its own store listing that it is not a licensed doctor and does not practice medicine.

People lean on it anyway. In a KFF poll from early 2026, 32% of US adults had used an AI chatbot for health information in the past year, and 42% of those asking about physical health did not follow up with a doctor or other professional. If the answer is to see someone, see someone. Whether an AI can prescribe is a separate question, answered on our prescribing page.

Should you go to the ER? Where triage advice fails

The triage line (stay home, see a doctor, urgent care or ER) is the most useful thing a checker gives you, and the riskiest. In a Mount Sinai stress test published in Nature Medicine in February 2026, the health mode of a major general chatbot sent 52% of true emergencies, including diabetic ketoacidosis and impending respiratory failure, to a 24 to 48 hour appointment, while it got textbook cases like stroke right.

So skip the checker and call 911 for chest pain or pressure, trouble breathing, sudden numbness or weakness on one side, a drooping face, slurred speech, a sudden severe headache, bleeding that will not stop, or fainting. If it could be a stroke, the CDC says to call an ambulance rather than drive, so treatment starts on the way. If you are thinking about harming yourself, call or text 988, free and open 24/7.

AI medical diagnosis: how often symptom checkers get it right

Not often enough to act on. A 2022 systematic review in npj Digital Medicine covered 10 studies of 48 symptom checkers: the condition listed first was right 19% to 38% of the time, the right one made the top three in 33% to 58%, and triage advice was right 49% to 90% of the time, depending on the tool. Newer chatbots struggle at the same step. In a Mass General Brigham study in JAMA Network Open in April 2026, all 21 models tested failed to produce a sound list of possible diagnoses more than 80% of the time, though they did far better once a case was complete.

How you describe it matters too. In an Oxford trial of 1,298 UK adults, the models alone identified the condition in 94.9% of written cases, but people using them found a relevant condition in fewer than 34.5%, no better than people using their usual sources. Give the checker everything up front: age, how long it has lasted, what makes it worse, and your medicines.

checking my symptoms: quick answers

Urgent care or ER: which one is right for your symptoms?

The ER is for anything that could kill or permanently disable you, such as severe chest pain or pressure, trouble breathing, heavy bleeding, sudden confusion, poisoning or a seizure lasting more than a minute. Urgent care is for problems that need care soon but are not life-threatening: colds, flu, earaches, sore throats, low fevers, sprains and minor cuts, according to the National Library of Medicine's MedlinePlus. If you are unsure and it is not an emergency, call your doctor's office or your insurer's nurse line.

Can you use a general AI chatbot as a symptom checker?

You can, and many people do, but the evidence says it does not help much. In the Oxford trial, people using general chatbots chose the right next step in fewer than 44.2% of cases, no better than people left to their usual sources. If you use one, give it every detail and ask plainly how urgent this is; our accuracy check on the most-used chatbot has the wider numbers.

Is there an AI doctor you can video call?

Not one that replaces a visit. The video calls offered next to AI doctor chats are with licensed human doctors: one service in the list charges $39 per visit, or your insurance copay, in all 50 states. The AI handles the questions up front, and the doctor on the call decides on treatment.

Is your health data private in an AI health app?

Not automatically. The FTC warns that, unlike your doctor, health apps may not be covered by HIPAA, so the app's own privacy policy is most of your protection; since 2024 the FTC's Health Breach Notification Rule also counts sharing your health data without your permission as a breach. In KFF's poll, 77% of US adults said they worry about the privacy of medical information given to AI tools. Where you can, use a checker that works without an account, and check whether your chats are used to train AI.