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Unlike a migraine, thunderclap headaches seem to come on suddenly. The pain grabs your attention in the same way a clap of thunder does. You can feel pain anywhere on your head or neck. You may even feel it in your back. You might also have several other symptoms, including: Changes in vision. Confusion. Nausea.
Cluster headaches are often confused with other forms of headaches, especially migraines and sinus headaches. The Mayo Clinic lists common symptoms of cluster headaches as localized pain around one eye, pain that is prevalent on one side, restlessness, tearing of one or both eyes, a stuffy or runny nose on the affected side, swelling around the eye and a drooping eyelid.