[Differential diagnosis of allergic diseases of the upper respiratory tract].

The author studied various manifestations of the most widely spread clinical forms of allergic diseases of the upper respiratory tract, namely, the bacterial, atopic and combined ones. In addition to clinical investigations laborotory, immunologic and functional tests were conducted. The difference in pathogenesis affected the clinical course of the disease. Some symptoms depended on the kind of sensibilization, others on how strongly pronounced the pathologic process was.