The Effect of Sphenopalatine Ganglion Block on Headache and Vasalgia

Screening Criteria: * Age ≥ 18 years * Expected to consume a large amount of alcohol at the metal festival Copenhell * Expected to be able to cooperate during block administration * No known history of migraine, chronic headache, or allergy to substances used in the study * Able to understand and speak Danish Inclusion Criteria: * Meets screening criteria and is present on the day of intervention * Moderate to severe headache (defined as ≥ 3 on a 0-10 VAS) on the day of intervention Exclusion Criteria: * Intake of alcohol or other intoxicating substances after waking up on the day of intervention.