[Classification of the rhinitis]

The development of differential diagnosis of rhinitis has multiplied their present classification. Generally, there are known two types of classifications: a) based on nasal cytology (Connell 1983); b) arising from clinical evaluations (Mygind 1985). Zeiger's work (1989) takes into consideration both types of classifications and describes them widely. This paper presents different methods used as background in contemporary classifications rhinitis.