["Headache","Headache site","Acute headache","Aural headache","Nasal headache","Sinus headache","Viral headache","Aching headache","Dental headache","Ocular headache","Frontal headache","Morning headache","Frequent headache","Parietal headache","Shooting headache","Temporal headache","Bilateral headache","Occipital headache","Throbbing headache","Postpartum headache","Unilateral headache","Generalised headache","Generalized headache","Orthostatic headache","Postseizure headache","Psychogenic headache","Cervicogenic headache","Intermittent headache","Benign coital headache","Posttraumatic headache","Headache caused by drug","Cough headache syndrome","Headache due to exertion","Drug withdrawal headache","Analgesic overuse headache","Benign exertional headache","Medication overuse headache","Headache character - finding","Acute posttraumatic headache","Headache due to cold exposure","Unilateral left sided headache","Unilateral right sided headache","Intractable headache caused by drug","Headache due to intracranial disease","Headache due to injury of head and neck","Headache associated with sexual activity","Headache caused by oral contraceptive pill","Headache due to external compression of head","Headache associated with substance abuse or withdrawal","Headache due to reversible cerebral vasoconstriction syndrome"]