Abstract
Cluster headache (CH) is characterized by severe unilateral short-lasting headache attacks, accompanying ipsilateral cranial autonomic symptoms or the sense of restlessness and agitation, or both. CH is a highly disabling primary headache disorder but often not optimally treated. High-flow oxygen and parenteral triptans are the most effective treatment to treat an acute CH attack. Transitional treatments include systemic steroid therapy and sub-occipital steroid injection. For preventive therapy, verapamil and lithium are recommended as first-line treatments. Novel treatments have appeared, such as neuromodulation and medication targeting calcitonin gene-related peptide (CGRP) or its receptor. Galcanezumab, the only anti-CGRP receptor monoclonal antibody with proven efficacy for the preventive treatment of episodic CH, represents an important advance for pharmacological treatment of CH. Neuromodulation strategies, such as the non-invasive vagus nerve stimulation and the sphenopalatine ganglion stimulation, have been proven effective in reducing the intensity and frequency of attacks, and also to be safe and well tolerated.
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