Various conditions with the symptom of HEADACHE. Headache disorders are classified into major groups, such as PRIMARY HEADACHE DISORDERS (based on characteristics of their headache symptoms) and SECONDARY HEADACHE DISORDERS (based on their etiologies). (International Classification of Headache Disorders, 2nd ed. Cephalalgia 2004: suppl 1)
Also Known As:
Headache Syndromes; Headache, Chronic; Chronic Daily Headache; Headache, Intractable; Cephalgia Syndrome; Chronic Daily Headaches; Chronic Headaches; Daily Headache, Chronic; Daily Headaches, Chronic; Headache Disorder; Headache Syndrome; Headache, Chronic Daily; Headaches, Chronic; Headaches, Chronic Daily; Headaches, Intractable; Intractable Headache; Intractable Headaches; Syndrome, Headache; Cephalgia Syndromes; Chronic Headache