Cluster Headache Like Symptoms Due to Sinusitis: Evidence for Neuronal Pathogenesis of Cluster Headache Syndrome

SYNOPSIS
Two patients with paranasal sinusitis, who showed cluster headache like symptoms rather than typical sinusitis symptoms, are reported. A possible mechanism of the cluster headache like symptoms is discussed. The importance of paranasal radiological study of patients with cluster headache like symptoms is emphasized. These cases seem to support a neuronal pathogenesis of the cluster headache syndrome.