For many types of headaches, the exact mechanism causing the pain is not fully known. But here is a description of several types of headaches and what triggers them, what doctors think cause them, and how they can be treated.
[10 Types of Headaches: Symptoms, Causes, and Treatments (healthline.com)](https://www.healthline.com/health/headache/types-of-headaches#rebound-headaches)
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