Acute Respiratory Distress Syndrome (ARDS) is a severe and life-threatening condition that affects the lungs and causes difficulty breathing. Symptoms of ARDS include difficulty breathing, rapid breathing, shortness of breath, rapid heart rate, and bluish skin color. ARDS is diagnosed through a physical exam, medical history, chest X-ray, and blood tests. Treatment for ARDS includes supportive care such as oxygen therapy, mechanical ventilation, and medications to improve lung function. In some cases, doctors may also recommend surgery to remove fluid from the lungs or to repair damaged tissue.