Medication-overuse headache in patients with cluster headache

Cluster headache (CH) is associated with the most severe pain of the primary headache disorders. Barriers to optimal care include misdiagnosis, diagnostic delay, undertreatment, and mismanagement. Medication-over-use headache (MOH) may further complicate CH and may present as increased CH frequency or development of a background headache, which may be featureless or have some migrainous quality.

Treatment of Acute Cluster Headache with Sumatriptan — The Sumatriptan Cluster Headache Study Group

Attacks of cluster headache are difficult to treat. Sumatriptan, an agonist of 5-hydroxy-tryptamine1—like receptors, has proved effective in the treatment of migraine. The clinical similarities between migraine and cluster headache and positive results from an open pilot study in patients with cluster headache indicated that sumatriptan should be evaluated more rigorously in the treatment of this condition.