Debbie Rigby rounds up the latest in research news Cluster headache in adults Cluster headache is characterised by attacks of very severe, unilateral headache lasting 15–180 minutes, up to eight times per day, typically at night. First-line acute abortive treatments include intranasal or subcutaneous sumatriptan or high-flow oxygen. First-line preventive therapy is high-dose verapamil. Aust
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