Resistant to treatment; see Intractable.
- Cluster Headache and Other TACs: Pathophysiology and Neurostimulation Options
- Cluster Attacks Responsive to Recreational Cannabis and Dronabinol
- Cluster Headache—Acute and Prophylactic Therapy
- Stereotactic radiosurgery for intractable cluster headache: an initial report from the North American Gamma Knife Consortium
- Implanted Occipital Nerve Stimulators