Background: Clinically, cough is classified by the duration which has implications for diagnosis and subsequent treatment. For example, chronic coughs lasting more than eight weeks, such as those related to allergies or gastroesophageal reflux disease, will have very different implications than acute coughs that less three weeks, such as those caused by the common cold. […]

Case Presentation: A 76-year-old male with a history of allergic rhinitis presented to the hospital with four weeks of persistent dry cough. His cough is exacerbated by mild exertional activities and occurs at all hours. He had no nasal congestion, sore throat, hoarseness, hemoptysis, dyspnea, dysphagia, heartburn, or recent respiratory tract infection. He reported no […]