Wet rales are sounds produced by the rupture of blisters formed by gas passing through secretions such as exudate, sputum, blood, mucus and pus in the respiratory tract during inspiration, so they are also called blister sounds. Or it is thought to be the bursting sound produced by the wall of the small bronchus trapped and closed due to adhesion of secretions, which suddenly opens and re-inflates when inspiration is applied. Wet rales are one of the important signs during auscultation of the lungs. The etiology of the wet rales lung confined wet rales, only suggest that the local lesions, such as pneumonia, tuberculosis or bronchiectasis; both sides of the lung base wet rales, mostly seen in heart failure caused by pulmonary stasis and bronchopneumonia, etc.; such as the two lung fields full of wet rales, it is mostly seen in acute pulmonary edema or severe bronchopneumonia. Common diseases 1, acute whistle distress syndrome This life-threatening disease leads to diffuse fine and coarse wet rales that can be heard at the site of the lesion, it can also lead to cyanosis, nasal fluttering, shortness of breath, tachycardia, coarse whistle sounds, dry rales, difficulty in whistling, anxiety and decreased level of consciousness. 2. Acute asthma attacks Severe attacks usually occur at night or during sleep and cause a dry cough and whistling sound. The attack usually begins with a dry cough and mild shortness of breath and progresses to severe dyspnea, chest tightness, and coughing up sputum. Other symptoms include fear, prolonged whistling, dry rales, inspiratory depression of the intercostal space and supraclavicular recess, whistle-assisted whistling, nasal flapping, shortness of breath, tachycardia, sweating, and facial flushing or cyanosis. 3, chronic bronchitis The disease can cause coarse wet rales, which are usually heard at the base of the lungs as well as prolonged inspiratory phase, wheezing, dry rales, dyskinesia, shortness of breath with persistent cough and increased bronchial secretions, pestle-like fingers (toes), and possibly cyanosis. 4, chemical pneumonia Acute chemical pneumonia can be heard as diffuse fine and coarse wet rales with purulent sputum, dyspnea, wheezing, seated whistling, fever, fatigue and signs of mucosal irritation. Signs and symptoms may worsen after 24 to 48 hours of exposure and then begin to dissipate. However, if it is severe, it can recur after 2 to 5 weeks. 5, interstitial pulmonary fibrosis With this disease, wet rales that seem to tear nylon buckle-like can be heard in the lobes of the lungs, and as the disease progresses, there can be a dry cough, dyspnea, fatigue, wasting, cyanosis, and chest pain. 6, legionellosis The disease can cause diffuse wet rales and cough a small amount of mucopurulent sputum, there may also be blood sputum. The prodromal signs and symptoms usually include lethargy, fatigue, weakness, loss of appetite, diffuse myalgia, and possibly diarrhea. Within 12 to 48 hours, patients develop a dry cough and sudden onset of high fever with chills. They may also present with chest pain, headache, dyspnea, shortness of breath, tachycardia, nausea, vomiting, mild temporary amnesia, confusion, flushing, mild sweating, and deficiency.