Recent Blog Articles
Sugar: How sweet it is... or is it?
Cardiovascular safety from prostate cancer drugs remains uncertain
Rising alcohol use among older adults
Easily distracted? Try meditation
Harvard Health Ad Watch: Can a wearable device reduce stress?
Listening to your hunger cues
Does your child need to bathe every day?
Can flavonoids help fend off forgetfulness?
Can physical or cognitive activity prevent dementia?
Wondering how much your medical care will cost? New rules could help
What Is It?
Cluster headaches are very intense headaches. They usually start in the area around one eye, then spread to nearby areas of the face. Each headache lasts about a half-hour to three hours. Episodes can occur several times over 24 hours (in clusters). This happens daily, lasting several weeks to months.
Most cluster headaches occur at night. This condition affects men much more frequently than women. Some people discover they have "triggers" that start the headache, such as:
To continue reading this article, you must log in.
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.
- Research health conditions
- Check your symptoms
- Prepare for a doctor's visit or test
- Find the best treatments and procedures for you
- Explore options for better nutrition and exercise
I'd like to receive access to Harvard Health Online for only $4.99 a month.Sign Me Up
Already a member? Login ».
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.