Headaches and Migraines What Are Secondary Headaches? Share Pin Email Headaches and Migraines Migraine Symptoms Basics Diagnosis Treatment Coping Understanding Migraines Updated April 06, 2016 Continue Reading What is a secondary headache? This is what you should know. Up Next Up Next Video What Diseases Cause Secondary Headaches? Up Next Video Should I Go to the Emergency Room for a Headache? Up Next Video Why Do You Get Headaches? Up Next Video Are Migraines Dangerous?