[Dyspnea, fever].

A 28-year-old female with known allergic bronchial asthma complained about increasing dyspnea, white sputum and fever. Pulmonary infiltrates progressed in spite of tetracycline administration. An increased leucocyte count, eosinophilia and an elevated sedimentation rate were found. Bronchoscopy was unrevealing except for signs of mild bronchitis. Eosinophils were abundant in the bronchial lavage. Eosinophilic pneumonia was diagnosed in a biopsy specimen. Prednisolone (100 mg/die initially, decreasing doses thereafter) led to significant reduction of infiltrates and eosinophilia. After 8 weeks of treatment the patient had completely recovered.