symptoms of lung disorders
lung and airway disorders
Wheezing
Asthma is the most common cause, but not all wheezing is caused by asthma. Wheezing that starts suddenly in people without a lung disorder may be due to inhalation of a foreign object or a toxic substance, an allergic reaction, or heart failure. Pulmonary function tests can identify and measure airway narrowing. Inhaled bronchodilators can help relieve wheezing, but the disorder causing wheezing must also be treated. 