ABSTRACT
Rhinitis is a common problem among patients in health care. After excluding acute respiratory infections, allergy, nasal polyposis, and other defined disorders, a large number of patients are found to suffer from nonspecific nasal hyperreactivity, vasomotor rhinitis, or idiopathic rhinitis, without known pathophysiology. Among these patients, some complain of hyperreactivity to scents and chemicals such as perfumes, some flowers, tobacco smoke, pesticides, etc. In recent years, it has been possible to identify a new diagnosis for this group, sensory hyperreactivity (SHR) (1-3). This chapter will deal with etiology, prevalence, symptomatology, physiological tests, and treatment of this disorder.
