Medical Conditions That Cause Severe Headaches

Headache Causes - Mayo Clinic

https://www.mayoclinic.org/symptoms/headache/basics/causes/sym-20050800

Any number of conditions — varying greatly in severity — may cause secondary headaches. Possible causes of secondary headaches include: Acute sinusitis (nasal and sinus infection) Arterial tears (carotid or vertebral dissections) Blood clot …

Chronic daily headaches - Symptoms and causes - Mayo …

https://www.mayoclinic.org/diseases-conditions/chronic-daily-headaches/symptoms-causes/syc-20370891

11 types of headaches: Causes, symptoms, and treatment

https://www.medicalnewstoday.com/articles/320767

Migraine - Symptoms and causes - Mayo Clinic

https://www.mayoclinic.org/diseases-conditions/migraine-headache/symptoms-causes/syc-20360201

Headache with fever, stiff neck, confusion, seizures, double vision, numbness or weakness in any part of the body, which could be a sign of a stroke Headache after a …