Intravenous Lacosamide for the Treatment of Acute Pain in Trigeminal Neuralgia

All patients diagnosed with trigeminal neuralgia who present to the emergency department of Hospital de Bellvitge for an acute pain exacerbation and are prescribed intravenous lacosamide as symptomatic pain treatment, according to the treating physician's discretion, will be considered for inclusion. Inclusion Criteria: * Diagnosis of classical or idiopathic trigeminal neuralgia according to the criteria of the International Classification of Headache Disorders (ICHD-3). * Age over 18 years. * Signed informed consent. Exclusion Criteria: * Contraindication for treatment with lacosamide (previous hypersensitivity reaction, known atrioventricular block). * Mental or psychiatric illness that interferes with the ability to understand and sign the informed consent. * Language barrier. * Lack of cooperation.