[Unilateral nasal symptoms].

The most frequently appearing unilateral nasal symptoms or signs are stuffiness, rhinitis and bleeding. The etiology of unilateral symptoms must always be identified. Most commonly such symptoms are caused by structural, functional or inflammatory disorders. On the other hand, the cause may be a tumor, and appropriate further investigations are to be planned carefully. In addition to medical history and clinical examination, imaging of the nose and the paranasal sinuses, as well as biopsies taken from the nasal mucosa, are used to examine etiology for nasal symptoms and signs.