Ask the same question three different ways
These models are probabilistic, not deterministic; the answer to a question depends on exactly how you asked it. A study on osteoarthritis found that LLM recommendations varied widely with minor changes in prompt phrasing. Vary how you describe your symptoms (“fever” becomes “running a temperature”) and time course. If advice is consistent across framings, trust it more; if it swings wildly, bring the question to a clinician. A recent Oxford study made this vivid: two participants described the same condition, but one used the phrase “the worst headache ever” and was told to go to the ER, while the other who described a “terrible headache” was told to take aspirin and stay home.
Be complete and honest, just as you would with your doctor
The quality of the AI bot’s advice depends on the level of detail you input, and chatbots, like clinicians, are not mind readers. The more information you include on your medical history, lab tests, medications, and lifestyle habits, the more personalized the answer will be. Do not minimize and do not embellish, or you risk getting a confident-sounding but suboptimal answer.
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