A Phase III Study of Civamide Nasal Solution (Zucapsaicin) for the Treatment of Episodic Cluster Headache

You may be eligible if

• At least 2 year history of episodic cluster headache (meeting IHS criteria)
• At least 2 previous episodes
• Expected duration of cluster period is at least 6 weeks but not longer than 16 weeks
• At least 1 but not more than 8 headaches on each of the 3 days immediately prior to treatment