Last updated: May 15, 2026
This Medical Disclaimer (‘Disclaimer’) applies to all content, communications, and consultations provided by HeadacheFree.Doctor, operated by Dr. Tae Ho Guak, MD.
Educational and second-opinion purpose only
All content on this website, and all consultations purchased through it, are provided for educational purposes and as a second opinion only. They are not a substitute for diagnosis, prescription, treatment, or any other form of in-person medical care. Always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.
No doctor–patient relationship
Use of this website, reading any article, or purchasing a consultation does not create a doctor–patient relationship in the clinical, legal, or regulatory sense. Dr. Guak does not assume primary responsibility for your medical care. Your primary physician remains your treating doctor.
⚠ Emergency situations
Do not use this service for medical emergencies. Symptoms that require immediate emergency care include, but are not limited to:
- Sudden, severe, or ‘worst-ever’ headache (“thunderclap”)
- Headache with fever, stiff neck, rash, confusion, seizure, weakness, numbness, vision loss, or difficulty speaking
- Headache after a head injury
- Any symptom you believe may be life-threatening
If you experience any of these, contact your local emergency services immediately (for example, 911 in the United States, 119 in Korea/Japan, 120 in China, 112 in the European Union) or go to the nearest emergency department.
Accuracy and individual variation
Headache medicine evolves continuously. While we strive to keep content current and evidence-based, individual responses to treatments vary. No general information on this site can replace a personalized clinical assessment from your treating physician.
External links and third parties
This website may link to external resources for your convenience. We do not endorse, control, or guarantee the accuracy of any third-party content.
Scope limitation: headache only
This service is limited to headache and related neurological topics. We do not provide opinions on non-headache conditions. Questions outside this scope will be redirected to seek appropriate specialist care.
Contact
Questions about this Disclaimer: Dr.guak@riche.clinic. EOS Brain Science Institute, Business Reg. 835-25-00409, Republic of Korea.