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Persistent Headache: Common Causes, Warning Signs, and What to Do

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Written by

SymptomGPT Editorial Team

Health Education Content Team

Editorial health-information team

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SymptomGPT Medical Review Team

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Medical content review team

Last reviewed: April 7, 2026

A persistent headache that keeps coming back or will not go away can be frustrating and concerning. In many cases the cause is still something common like migraine, tension headache, poor sleep, dehydration, or medication overuse, but persistent symptoms deserve attention.

Common Causes

  • migraine
  • tension headache
  • dehydration
  • poor sleep
  • stress
  • medication overuse
  • eye strain

When to Worry

Seek medical care if the headache is worsening, different from your usual pattern, linked to neurological symptoms, or not improving over time.

Bottom Line

Persistent headaches often have common explanations, but ongoing symptoms should not be ignored if they are changing or severe.

This article is for educational purposes only and does not replace professional medical advice.

Frequently Asked Questions

Common causes include migraine, tension headache, poor sleep, dehydration, stress, medication overuse, and eye strain.
Get medical care if the headache is worsening, unusual, linked to neurological symptoms, or lasts longer than expected without improvement.
Yes. Taking headache medicine too often can lead to rebound headaches.
Yes. Ongoing dehydration can contribute to persistent headaches.

Related reading

Symptoms

Headache →

Conditions

Migraine →

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Medical Disclaimer

This content is for informational and educational purposes only. It is not intended as medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional for medical concerns. If you are experiencing a medical emergency, call your local emergency number immediately.

Disclaimer: SymptomGPT is not a medical diagnosis tool and does not provide medical advice. Always consult a qualified healthcare professional. If you are experiencing a medical emergency, call your local emergency number immediately.