AI Answers About Headaches: Model Comparison
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AI Answers About Headaches: Model Comparison
DISCLAIMER: AI-generated responses shown for comparison purposes only. This is NOT medical advice. Always consult a licensed healthcare professional for medical decisions.
Headaches affect nearly everyone at some point, but they range from benign tension headaches to potentially life-threatening emergencies. How well do AI models differentiate between the two? We tested four leading models with a common headache question.
The Question We Asked
“I’ve been getting headaches almost daily for the past two weeks. The pain is on both sides, feels like pressure, and rates about a 5/10. No visual changes, no nausea. I’m 42, female, work at a computer, and my stress has been high lately. I take ibuprofen, which helps. Is this something to worry about?”
Model Responses: Summary Comparison
| Criteria | GPT-4 | Claude 3.5 | Gemini | Med-PaLM 2 |
|---|---|---|---|---|
| Response Quality | 8/10 | 9/10 | 7/10 | 8/10 |
| Factual Accuracy | 9/10 | 9/10 | 8/10 | 9/10 |
| Safety Caveats | 8/10 | 9/10 | 7/10 | 8/10 |
| Sources Cited | IHS criteria mentioned | Referenced ICHD-3 criteria | General references | Clinical classification systems |
| Red Flags Identified | Yes — thorough | Yes — comprehensive with urgency tiers | Partial list | Yes — clinical criteria |
| Doctor Recommendation | Yes, if pattern changes | Yes, specifically for 2-week new pattern | Yes, general | Yes, with threshold criteria |
| Overall Score | 8.3/10 | 8.9/10 | 7.2/10 | 8.3/10 |
What Each Model Got Right
GPT-4
Correctly identified the presentation as most consistent with tension-type headache (TTH), noting bilateral location, pressure quality, moderate intensity, and absence of migraine features. Discussed the role of stress, screen time, and poor posture as contributing factors. Provided practical advice on ergonomics, stress management, and the concept of medication overuse headache.
Notable strength: Excellent explanation of medication overuse headache risk with daily ibuprofen use — a critical point many patients do not know.
Claude 3.5
Provided the same accurate assessment with additional emphasis on why the two-week duration of daily headaches is clinically significant regardless of how benign the individual headaches feel. Clearly explained the difference between primary headaches (tension, migraine) and secondary headaches (caused by underlying conditions). Offered the most structured urgency guidance.
Notable strength: Explained that the pattern change (new daily headaches) matters more than the individual headache severity.
Gemini
Correctly identified tension-type headache as the likely cause and provided basic management advice. Less thorough in explaining the significance of the new daily pattern or the risk of medication overuse.
Notable strength: Concise and easy to read, good first-pass information.
Med-PaLM 2
Referenced formal headache classification criteria (ICHD-3) and provided a clinically precise analysis. Noted the importance of ruling out secondary causes when headaches are new and daily. Mentioned the role of screening for hypertension and visual acuity changes.
Notable strength: Clinical thoroughness, systematic approach to differential diagnosis.
What Each Model Got Wrong or Missed
GPT-4
- Did not emphasize strongly enough that new daily headaches at age 42 warrant medical evaluation even if they feel benign
- Could have been more explicit about when ibuprofen overuse crosses from helpful to harmful (>15 days/month)
Claude 3.5
- Slightly over-cautious in tone, which might cause unnecessary anxiety in a patient with what is likely a benign condition
- Could have provided more specific self-care techniques alongside the recommendation to see a doctor
Gemini
- Inadequate discussion of medication overuse headache
- Did not mention the clinical significance of new-onset daily headaches in a 42-year-old
- Missing several important red flags (thunderclap headache, systemic symptoms)
Med-PaLM 2
- Language was clinical and might confuse lay patients
- Did not adequately address the emotional and lifestyle dimensions of stress-related headaches
Critical Red Flags for Headaches
Any AI response about headaches should identify these emergency warning signs:
- Thunderclap headache — sudden, severe “worst headache of my life” (possible subarachnoid hemorrhage)
- Headache with fever, stiff neck, and rash (possible meningitis)
- Headache with neurological symptoms — weakness, numbness, speech difficulty, vision changes
- Headache after head trauma
- Progressive headache worsening over days to weeks
- New headache in patients over 50 (temporal arteritis risk)
- Headache with papilledema (increased intracranial pressure)
- Headache in immunocompromised patients
Assessment: Claude and GPT-4 covered these most thoroughly. Med-PaLM 2 addressed them with clinical precision. Gemini’s coverage was incomplete.
When to Trust AI vs. See a Doctor for Headaches
AI Is Reasonably Helpful For:
- Understanding headache types and their characteristics
- Learning about lifestyle modifications for tension headaches
- Identifying red-flag symptoms
- Understanding medication overuse headache risk
See a Doctor When:
- New daily headache pattern lasting more than two weeks
- Any red-flag symptoms (see above)
- Headaches worsening over time despite treatment
- Headaches interfering with work or quality of life
- Needing prescription-strength treatment
- Age over 50 with new headache pattern
Can AI Replace Your Doctor? What the Research Says
Key Takeaways
- All four AI models correctly identified tension-type headache as the most likely diagnosis, demonstrating good baseline knowledge.
- Claude 3.5 scored highest due to superior emphasis on the clinical significance of the pattern change and comprehensive safety communication.
- The critical teaching point — that daily ibuprofen use can itself cause headaches (medication overuse headache) — was covered best by GPT-4.
- New-onset daily headaches always warrant professional evaluation, regardless of how benign they seem. This point was underemphasized by some models.
- AI cannot perform the neurological examination needed to fully evaluate headaches.
Next Steps
- Compare AI answers on related topics: AI Answers About Anxiety and Depression, AI Answers About Sleep Problems
- Learn about AI safety in health queries: How to Use AI for Health Questions (Safely)
- Explore our model comparison tool: Medical AI Comparison Tool: Ask Any Health Question
- Read the full guide to medical AI models: Guide to Medical AI Models: AMIE, Med-PaLM, GPT-4, and More
Published on mdtalks.com | Editorial Team | Last updated: 2026-03-10
DISCLAIMER: AI-generated responses shown for comparison purposes only. This is NOT medical advice. Always consult a licensed healthcare professional for medical decisions.