Ключевые слова: asian, chinese, chronic daily headache, cluster, cluster headache, elderly, female, headache, indonesian, japanese, lithium, magnesium, medication overuse, migraine, migraine accompaniment, naproxen, painful, patient, pensioner, propranolol, retirement, senior, singapore, sleep apnea, subarachnoid hemorrhage, symptoms, taiwanese, temporal arteritis, tension, tension headache, thai, thunderclap, topiramate, transient blindness, treatment, trigeminal neuralgia, wheelchair,