BRAZILIAN JOURNAL OF OTORHINOLARYNGOLOGY, cilt.86, sa.4, ss.450-455, 2020 (SCI-Expanded)
Introduction: Mucosal contact headache is a referred pain that arises from contact between the nasal septum and the lateral nasal wall. Evidence supports the role of substance P in a contact headache such that release of substance P from sensory nerve endings causes inflammation and allergy.