Classification of cluster headaches
There are 2 types of cluster headaches:
- Episodic cluster headaches are the most common type of cluster headaches. People with episodic cluster headaches have cluster periods of 1 to 3 months when they are prone to having headaches. The cluster periods are followed by headache-free periods (remissions) of 6 months or more. Between 75% and 85% of people who have cluster headaches have episodic cluster headaches.
- Chronic cluster headaches are those that occur during a period of at least 12 months without a headache-free period (remission) or when remissions last less than 14 days. Between 10% to 20% of people who have cluster headaches develop chronic cluster headaches.1, 2
| Author: | Douglas Dana Ralph Poore | Last Updated: August 14, 2006 |
| Medical Review: | Renée M. Crichlow, MD - Family Medicine Adam Husney, MD - Family Medicine Colin Chalk, MD, CM, FRCPC - Neurology Seymour Diamond, MD - Neurology | |
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