Difficulties in differential diagnosis of lingering dry cough in children: from typical to rare causes

This article deals with difficulties in differential diagnosis of lingering dry cough in children. The focus of the article is on the rare reason for lingering cough: hypersensitive pneumonitis. A brief review of the literature on this rare form of pathology is presented. The authors described two own clinical observations that demonstrate the difficulties in diagnosis, features of the course and management of patients with acute / subacute form of hypersensitive pneumonitis in prolonged observation