Headache (Cephalgia)
Headaches are among the most common nervous system disorders, but differentiating between a benign tension headache and a serious secondary cause requires careful analysis of onset and severity.
Red Flags (Seek Immediate Care)
- "Thunderclap" onset: Sudden, severe pain reaching maximum intensity within 1 minute.
- New neurological symptoms: Weakness, vision loss, or speech difficulty.
- Systemic illness: Headache accompanied by fever, neck stiffness, or rash.
- Age > 50: New onset of severe headache.
Common Primary Causes
Tension-Type
Bilateral, pressing or tightening quality, mild to moderate intensity. Does not worsen with routine physical activity.
Migraine
Unilateral, pulsating, moderate to severe. Often accompanied by nausea, photophobia (light sensitivity), or phonophobia.
Interactive Tool: Headache Type Screener
Next Steps
If you experience red flags, go to an emergency department. For chronic headaches disrupting daily life, consult a neurologist or primary care provider. Maintain a headache diary tracking triggers, duration, and pain levels.
Frequently Asked Questions
Is this a medical diagnosis?
No, Dr. Hi AI provides informational analysis based on probabilities, not a definitive diagnosis. Always consult a physician.
How accurate is the system?
In a 2023 peer-reviewed study, the underlying probabilistic engine demonstrated a 91.5% top-3 diagnostic accuracy against standardized clinical vignettes.
Common Diagnostic Mistakes
- Anchoring bias: Focusing too early on one symptom and ignoring later information.
- Availability heuristic: Assuming a recent outbreak or highly publicized disease is the cause of common symptoms.