Laryngeal Cryotherapy for Refractory Neurogenic Cough

Inclusion Criteria: * Adult patients 18 years or older with diagnosis of neurogenic cough * Neurogenic cough is a diagnosis of exclusion applied to persistent cough (8 weeks or longer) * Negative workup for other causes, including sinonasal allergies/chronic sinusitis, cough-variant asthma, and GERD * Patient willing to participate in a clinical trial Exclusion Criteria: * Uncontrolled reflux (scoring on Reflux Symptom index of 13 or higher) * Vocal fold abnormalities or impairment * History of asthma or other underlying lung condition not adequately treated or controlled * Uncontrolled Allergic Rhinitis (Total Nasal Symptom Score \>6, which would indicate moderate disease32) * Reported symptom of postnasal drip * Current smoker * Current neuromodulator medication use * Patient unwilling to participate in clinical trial or sign an informed consent * End stage medical disease with poor life expectancy * Medical instability deemed by the investigators as a contraindication for enrollment * Abnormal Chest X-ray * Abnormal pulmonary function testing (PFTs) * Positive local allergy panel (combined RAST testing)