Primary trigeminal autonomic headaches treated with pericranial nerve block: report of two cases

Abstract

Trigeminal autonomic headaches (TAC) are a group of primary headaches with special clinical characteristics, among which are cluster headache, paroxysmal hemicrania, short-term unilateral neuralgiform headache, continuous hemicrania, and probable trigeminal-autonomic headache. They manifest autonomic phenomena such as lacrimation, nasal congestion, rhinorrhea, facial sweating, eyelid edema of a unilateral characteristic. We present 2 cases of CTA, one of a patient who met the diagnostic criteria for cluster headache (CR) and the other for paroxysmal hemicrania (CHP), both patients had years with their disease and did not respond to first-line pharmacological treatments. Therefore, the alternative of pericranial nerve block was chosen.