A 50-year-old woman was admitted to the emergency center with dyspnea, cough, and fever symptoms. She had a medical history of diabetes mellitus type II, rheumatoid arthritis, as well as several admission records due to aspiration pneumonia. The primary diagnosis was diabetic ketoacidosis and pneumonia. Normal breath sounds were reduced on the lower posterior right side of the thorax. A standard chest x-ray and lung Computed Tomography (CT) scan revealed collapse consolidation in the Right Lower Lobes (RLL) and Right Middle Lobes (RML). We here presented a case of unilateral diaphragmatic paralysis with a history of recurrent pneumonia.