Giant cell arteritis: clinical features of patients visiting a headache clinic in Japan.

Objective: The first symptom of giant cell arteritis (GCA) is usually a headache. Japan has a low prevalence of GCA, and clinical features of this disorder have not been fully investigated. We conducted a retrospective evaluation of clinical features in patients with giant cell arteritis who visited a headache clinic in Japan.

Clinical profile of cluster headaches in Japan: low prevalence of chronic cluster headache, and uncoupling of sense and behaviour of restlessness.

Introduction: This study examined the clinical profile of cluster headaches in Japan and the potential presence of features peculiar to Japan. Most previous studies of cluster headaches have focused on Caucasian populations.

Methods: Subjects comprised 86 consecutive new cluster headache patients (68 males, 18 females; mean age, 38.