anxiety disorders, depression, and migraines Headaches Headaches Anxiety and Depression Association of America (ADAA) studies have linked anxiety and depression more prone Headaches anxiety-based headaches Anxiety and Depression Association of America Headaches chronic fatigue Anxiety and Depression Association of America Headaches Anxiety and Depression Association of America studies Anxiety and Depression Association of America Headaches Headaches. ADAA. (2016) Headaches studies have linked anxiety and depression chronic fatigue