However, unlike migraines, cluster headaches are short-lived ... The eyelid on the affected side may become swollen. Dilated pupil: The pupil on the affected side may become dilated.

They can be migraine or tension headaches. Cluster headaches are a series of relatively short but very painful headaches every day for weeks or months at a time. It’s possible to have both ...

Cluster headaches are uncommon and much less common than tension headaches and migraines, and cause a distinct ... Nasal discharge Tearing of the eye Miosis (pupil constriction) Facial swelling.