|
ICHD-II criteria for episodic and chronic cluster headache |
| 3.1.1 Episodic cluster headache |
| A. All fulfilling criteria A through E of 3.1 |
| B. At least two cluster periods lasting from 7 to 365 days and separated by pain free remissions of > 1 month. |
| 3.1.2 Chronic cluster headache |
| A. All fulfilling criteria A through E of 3.1 |
| B. Attacks recur for > 1 year without remission periods or with remission periods lasting < 1 month. |
Leroux and Ducros Orphanet Journal of Rare Diseases 2008 3:20 doi:10.1186/1750-1172-3-20 |