• Sigrid Schuh-Hofer, Uwe Reuter, Stephan Kinze, Karl Max Einhäupl, and Guy Arnold.
• Dept. of Neurology, Charité, Berlin, Germany.
• J. Neurol. 2002 Jan 1; 249 (1): 94-9.

AbstractWe investigated the efficacy and tolerability of 20 mg sumatriptan nasal spray in the acute treatment of cluster headache attacks in an open-label study. 10 patients met the criteria of the International Headache Society (IHS) for episodic or chronic cluster headache and were enrolled in our study. The primary efficacy measure was "pain free" 30 minutes after treatment. Secondary end-points included "headache response" (defined as headache improvement from "very severe", "severe" or moderate" pain to "mild" or "no" pain) 15, 30, 45 and 60 minutes after treatment. We also assessed the participant's overall treatment satisfaction at the end of the study. Sumatriptan nasal spray was applied in 154 "moderate" to "very severe" cluster headache attacks. 30 minutes after nasal spray application, 50% of attacks were completely aborted and 58% of attacks responded to treatment. The overall efficacy of sumatriptan nasal spray was considered "excellent" in two, "good" in four, "reasonable" in two and "poor" in two patients. Eight patients indicated their intention to treat further attacks with intranasal sumatriptan. Seven patients were interviewed after a follow-up period of six months. Four patients continued to treat all cluster headache attacks with the intranasal sumatriptan formula, two patients had switched to subcutaneous sumatriptan and one patient was in remission since the end of the study. We conclude that 20 mg sumatriptan nasal spray might be an alternative therapy for the treatment of cluster headache attacks, but double-blind studies are needed to further evaluate its efficacy.

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